PRODUCTS

TRILON AS

Trilon AS (NTA) - chelating agents which basic purpose is water demineralizing and removal of the deposits containing Ca2 salts + and Mg2+. According to requirements of the standard tests OECD, Trilon AS possesses high ability to biodegradation.

CAS No. : 164462-16-2
EC No. : 605-362-9

IUPAC NAMES:
Alanine, N,N-bis(carboxymethyl)-, sodium salt (1:3)
trisodium 2-[bis(carboxymethyl)amino]propanoate
Trisodium Methylglycine-N,N-Diacetic Acid

Other names
* N,N-Bis(carboxymethyl)-DL-alanin trisodium salt
N-(1-Carboxyethyl)-iminodiacetic acid
α-Alanindiacetic acid
α-ADA
MGDA-Na3
Trilon M

SYNONYMS:
2-[Bis(carboxylatométhyl)amino]propanoate de trisodium ;Alanine, N,N-bis(carboxymethyl)-, sodium salt (1:3) ;Trinatrium-2-[bis(carboxylatomethyl)amino]propanoat ;Trisodium 2-[bis(carboxylatomethyl)amino]propanoate;TRISODIUM DICARBOXYMETHYL ALANINATE;TRISODIUM DICARBOXYMETHYL ALANINATE, L-;Trisodium N-(1-Carboxylatoethyl)iminodiacetate;170492-24-7[RN];MFCD08276427;N-N-Bis(carboxymethyl)alanine, trisodium salt;Trisodium N-(1-Carboxylatoethyl)iminodiacetate Hydrate
164462-16-2;trisodium dicarboxymethyl alaninate;Alanine, N,N-bis(carboxymethyl)-, sodium salt (1:3);Trisodium 2-Methylnitrilotriacetate;Alanine,N,Nbis(carboxymethyl)-,trisodiumsalt;TrisodiumN(1Carboxylatoethyl)iminodiacetate;TrilonM;Trisodiumdicarboxymethylalaninate;MGDA;Methylglycinediaceticacidtrisodiumsalt;DTXSID2044555;N,NBis(carboxylatomethyl)alanineTrisodiumSaltsodium;2-[bis(carboxylatomethyl)amino]propanoate;Q17381832;Sodium 2,2'-((1-carboxylatoethyl)azanediyl)diacetate;N-(1-Carboxylatoethyl)iminodiacetic Acid Trisodium Salt;Methyl Glycine Diacetic Acid Trisodium salt; Methyl glycine diacetic acid; Trisodium 2-methylnitrilotriacetate; DL-Alanine-N,N-diacetic acid;Trisodium ;Methylglycine-N,N-Diacetic Acid(MGDA.Na3);N,N-Bis (Carboxylatomethyl) Alanine Trisodium Salt;Trisodium N-(1-Carboxylatoethyl) Iminodiacetate;Trisodium Dicarboxymethyl Alaninate;Alanine,N,N-bis(carboxymethyl)-,trisodiumsalt;N,N-Bis(carboxymethyl)-DL-alanine, trisodiumsaltDL-Alanine-N,N-diaceticacidtrisodiumsalt;N(1CARBOXYLATOETHYL)IMINODIACETICACIDTRISODIUMSALT;TRISODIUM2METHYLNITRILOTRIACETATE; TRISODIUM N-(1-CARBOXYLATOETHYL)IMINODIACETATE; TRISODIUM DICARBOXYMETHYL ALANINATE; Alanine, N,N-bis(carboxymethyl)-, trisodium salt; N,N-Bis(carboxymethyl)-DL-alanine, trisodium salt; DL-Alanine-N,N-diacetic acid trisodium salt; trisodium 2-[bis(carboxylatomethyl)amino]propanoate

TRILON AS

TRILON AS is the trisodium anion of N-(1-carboxyethyl)iminodiacetic acid and a tetradentate complexing agent. It forms stable 1:1 chelate complexes with cations having a charge number of at least +2, e.g. the "hard water forming" cations Ca2+ or Mg2+. α-ADA is distinguished from the isomeric β-alaninediacetic acid by better biodegradability and therefore improved environmental compatibility.

Production
The patent literature on the industrial synthesis of TRILON AS describes the approaches for solving the key requirements of a manufacturing process that can be implemented on an industrial scale, characterized by.

Achieving the highest possible space-time yields.Simple reaction control at relatively low pressures and temperatures.Realization of continuous process options.Achieving the lowest possible levels of impurities, particularly nitrilotriacetic acid, which is suspected of being carcinogenic.Use of inexpensive raw materials, e.g. instead of pure L-alanine the raw mixture of Strecker synthesis from methanal, hydrogen cyanide and ammonia
Avoidance of complex and yield-reducing isolation steps; instead, direct further use of the crude reaction solutions or precipitates in the following process step.
An obvious synthesis route to α-alaninediacetic acid is from racemic α-DL-alanine, which provides racemic α-ADA by double cyanomethylation with methanal and hydrogen cyanide, hydrolysis of the intermediately formed diacetonitrile to the trisodium salt and subsequent acidification with mineral acids in a 97.4% overall yield.[4] In a later patent specification, however, only an overall yield of 77% and an NTA content of 0.1% is achieved with practically the same quantities of substances and under practically identical reaction conditions.[5]

This later patent specification[5] also indicates a process route via alaninonitrile, which is obtained by Strecker synthesis from hydrogen cyanide, ammonia and methanal and converted to TRILON AS by double cyanomethylation (step 1). The three nitrile groups are then hydrolyzed with sodium hydroxide to TRILON AS (step 2). The total yield is given as 72%, the NTA content as 0.07%.
One variant of the reaction involves iminodiacetonitrile or iminodiacetic acid (step 1'), which reacts in a weakly acidic medium (pH 6) with hydrogen cyanide and ethanal to form
TRILON AS, the nitrile group of which is hydrolyzed with TRILON AS. The reactant iminodiacetic acid is accessible at low cost by dehydrogenation of diethanolamine. Again, the total yield is given as 72%, the NTA content as 0.07%.
A further variant is suitable for continuous production, in which ammonia, methanal and hydrogen cyanide react at pH 6 to form iminodiacetonitrile, which in a strongly acidic medium (pH 1.5) reacts with ethanal to produce TRILON AS in a very good yield of 92%.
Alkaline hydrolysis (step 2) results in a total yield of 85% TRILON AS with an NTA content of 0.08%. This process variant seems to fulfil the above-mentioned criteria best.
A low by-product synthesis route for TRILON AS has recently been described, in which alanine is ethoxylated with ethylene oxide in an autoclave to form bis-hydroxyethylaminoalanine and then oxidized toTRILON AS at 190 °C with Raney copper under pressure
.The yields are over 90% d.Th., the NTA contents below 1%. The process conditions make this variant rather less attractive.

Properties
The commercially available TRILON AS (84% by weight) is a colourless, water-soluble solid whose aqueous solutions are rapidly and completely degraded even by non-adapted bacteria. Aquatic toxicity to fish, daphnia and algae is low.[7] TRILON AS is described as readily biodegradable (OECD 301C) and is eliminated to >90 % in wastewater treatment plants.[8] Trisodium TRILON AS has not yet been detected in the discharge of municipal and industrial sewage treatment plants. In addition to their very good biodegradability, TRILON AS solutions are characterized by high chemical stability even at temperatures above 200 °C (under pressure) in a wide pH range between 2 and 14 as well as high complex stability compared to other complexing agents of the aminopolycarboxylate type.
The complex formation constants of the biodegradable chelators α-ADA and IDS are in a range suitable for industrial use, but clearly below those of the previous standard EDTA.

In solid preparations, TRILON AS is stable against oxidizing agents such as perborates and percarbonates, but not against oxidizing acids or sodium hypochlorite.
Use
Like other complexing agents in the aminopolycarboxylic acid class, TRILON AS finds due to its ability to form stable chelate complexes with polyvalent ions (in particular the water hardening agents Ca2+ and Mg2+, as well as transition and heavy metal ions such as Fe3+, Mn2+, Cu2+, etc.) use in water softening, in detergents and cleaning agents, in electroplating, cosmetics, paper and textile production. Due to its stability at high temperatures and pH values, TRILON AS should be particularly suitable as a substitute for the phosphates banned in the EU from 2017, such as sodium tripolyphosphate (STPP)[12] in tabs for dishwashers.

BASF SE is the most important manufacturer of TRILON AS under the brand name Trilon M, has large-scale plants in Ludwigshafen and Lima, Ohio, and is currently expanding its existing capacities with another large-scale plant at Evonik's site in Theodore, Alabama.

Trilon AS liquid is an aqueous solution of the trisodium salt of methylglycinediacetic and water-softening products. Trilon AS liquid is readily biodegradable. Trilon AS (NTA) - chelating agents which basic purpose is water demineralizing and removal of the deposits containing Ca2 salts + and Mg2+. According to requirements of the standard tests OECD, Trilon AS possesses high ability to biodegradation. The BASF company is the world's largest producer of nitrilotriuksusny acid and its salts. Thanks to own production technology, the BASF company has opportunity to offer the customers product with the high content of active component, the low maintenance of by-products and almost free of chlorides and other undesirable ions. We not only offer customers product of high degree of purity, but also we guarantee reliability of its deliveries. NTA shows the best ratio price/quality among chelating agents on the basis of aminocarboxylats, as has caused its wide popularity in the market.

Trilon AS is generally used in production of detergents - for water demineralizing and prevention of formation of deposits on different types of surfaces and on fabric. Products of the Trilon AS series, and especially easily loose powder Trilon AS 92 R, are ideal components of system of kompleksoobrazovatel in soap powders. Products of the Trilon AS series are good replacement of the phosphates which are part of means for washing. The demand of besfosfatny detergents and in North America constantly grows in Europe. Practice shows that such chelating aminocarboxyarmour as Trilon AS, are more effective, than citrates, in means for industrial dishwashers, thanks to their higher stability and ability very effectively to delete limy raid and strong pollution.

Trilon AS T is an aqueous solution of the trisodium salt of methylglycinediacetic acid (Na3MGDA). Trilon AS finds application in detergents, cleaning, textiles, soap, metal plating, oil and gas, and water-softening products. Trilon AS is readily biodegradable. Trilon AS, methylglycinediacetic acid trisodium salt (MGDA-Na3) or trisodium α-DL-alanine diacetate (α-ADA), is the trisodium anion of N-(1-carboxyethyl)iminodiacetic acid and a tetradentate complexing agent. Trilon AS forms stable 1:1 chelate complexes with cations having a charge number of at least +2, e.g. the "hard water forming" cations Ca2+ or Mg2+. α-ADA is distinguished from the isomeric β-alaninediacetic acid by better biodegradability and therefore improved environmental compatibility. The patent literature on the industrial synthesis of Trilon AS describes the approaches for solving the key requirements of a manufacturing process that can be implemented on an industrial scale, characterized by. Achieving the highest possible space-time yields. Simple reaction control at relatively low pressures and temperatures. Realization of continuous process options. Achieving the lowest possible levels of impurities, particularly nitrilotriacetic acid, which is suspected of being carcinogenic.

Use of inexpensive raw materials, e.g. instead of pure L-alanine the raw mixture of Strecker synthesis from methanal, hydrogen cyanide and ammonia. Avoidance of complex and yield-reducing isolation steps; instead, direct further use of the crude reaction solutions or precipitates in the following process step. An obvious synthesis route to α-alaninediacetic acid is from racemic α-DL-alanine, which provides racemic α-ADA by double cyanomethylation with methanal and hydrogen cyanide, hydrolysis of the intermediately formed diacetonitrile to the trisodium salt and subsequent acidification with mineral acids in a 97.4% overall yield. In a later patent specification, however, only an overall yield of 77% and an NTA content of 0.1% is achieved with practically the same quantities of substances and under practically identical reaction conditions. The commercially available Trilon AS (84% by weight) is a colourless, water-soluble solid whose aqueous solutions are rapidly and completely degraded even by non-adapted bacteria. Aquatic toxicity to fish, daphnia and algae is low.

Trilon AS is described as readily biodegradable (OECD 301C) and is eliminated to >90 % in wastewater treatment plants.
Trilon AS has not yet been detected in the discharge of municipal and industrial sewage treatment plants. In addition to their very good biodegradability, Trilon AS solutions are characterized by high chemical stability even at temperatures above 200 °C (under pressure) in a wide pH range between 2 and 14 as well as high complex stability compared to other complexing agents of the aminopolycarboxylate type. The complex formation constants of the biodegradable chelators α-ADA and IDS are in a range suitable for industrial use, but clearly below those of the previous standard EDTA.

Trilon AS is stable against oxidizing agents such as perborates and percarbonates, but not against oxidizing acids or sodium hypochlorite. Like other complexing agents in the aminopolycarboxylic acid class, Trilon AS (α-ADA) finds due to its ability to form stable chelate complexes with polyvalent ions (in particular the water hardening agents Ca2+ and Mg2+, as well as transition and heavy metal ions such as Fe3+, Mn2+, Cu2+, etc.) use in water softening, in detergents and cleaning agents, in electroplating, cosmetics, paper and textile production. Due to its stability at high temperatures and pH values, α-ADA should be particularly suitable as a substitute for the phosphates banned in the EU from 2017, such as sodium tripolyphosphate (STPP) in tabs for dishwashers. BASF SE is the most important manufacturer of α-ADA under the brand name Trilon AS, has large-scale plants in Ludwigshafen and Lima, Ohio, and is currently expanding its existing capacities with another large-scale plant at Evonik's site in Theodore, Alabama.

Trilon AS is a chelating agent that delivers a non-toxic, environmentally friendly alternative to phosphates and other strong chelates. Methylglycinediacetic acid (MGDA) is the active ingredient and exceeds alternative products, like citrates, at removing lime scale and tough stains. Efficiently dissolve inorganic deposits and scales that produce undesirable effects like striking and spotting in dish wash and hard surface applications or limit the performance of surfactants and other additives in cleaners and detergents. Trilon AS chelating agent improves cleaning performance in hard surface, automatic dishwasher and laundry operations. I&l customers can use lower concentrations, due to its low molecular weight, of this strong complexing agent in their cleaning formulations, making Trilon AS more cost effective. This product is effective in both alkaline and acidic cleaners, and also demonstrates effective cleaning ability in a variety of applications, including general purpose cleaners, floor care products, warewashing detergents, disinfectants and sanitizers, laundry detergents, automatic dishwashers, vehicle wash aids, and hand cleansers.

Trilon AS is extremely efficient in combating hard water and allowing for the best cleaning performance to shine through. In formulas with anionic surfactants, Trilon AS is especially important to have an effective chelating agent like Trilon AS, particularly in hard water conditions. Other chelating agents just don’t perform as well, and without the addition of one at all, there is hardly any cleaning shown. The Trilon AS are very effective complexing agents for calcium in the alkaline pH range. This is an advantage in many detergent and cleaner applications. The Trilon AS are less likely to crystallise in the acidic Ph range than other aminocarboxylic acids, and they are still capable of complexing iron ions effectively in the pH 2 – 3 range. Weak complexing agents are incapable of reducing the concentration of free metal ions in aqueous systems to the same extent as the Trilon AS, and the result is that they are unable to prevent metal ions from playing a disruptive role in chemical processes.

Trilon AS are chemically very stable. The Trilon AS have been shown to be very stable compared to other organic complexing agents such as citric acid, tartaric acid and gluconates, especially at high temperatures. Whereas inorganic sequestring agents (eg. phosphates) may hydrolyse at high temperatures, Trilon AS are stable – even when heated to 200 °C under pressure. Trilon M Powder and Trilon M Granules begin to decompose at approx. 300 °C. The Trilon AS are resistant to strong acids and strong bases. They are gradually broken down by chromic acid, potassium permanganate and other strong oxidizing agents. Stability in the presence of hydrogen peroxide, percarbonate and perborate is sufficient for joint application. Nevertheless, we do not recommend combining Trilon AS and peroxides in liquid formulations. Sodium hypochlorite and other substances that release chlorine cause the Trilon AS to decompose. Alkaline earth and heavy metal complexes are broken down. Formulations that contain complexing agents have to remain chemically unchanged in storage and during transport in order to be able to unfold their full action. Many readily biodegradable complexing agents such as iminodisuccinates (IDS) and citrates are not sufficiently stable.

Trilon AS have excellent chemical stability under a wide range of conditions, and this ensures that formulations that contain Trilon AS remain effective over long periods. pH stability The Trilon AS are resistant to being broken down across the whole pH 2 – 14 range, even at elevated temperatures. For instance, formulations that contain Trilon AS and high concentrations of sodium hydroxide remain stable and do not precipitate. Other readily biodegradable complexing agents such as iminodisuccinate precipitate in alkaline media, and these weak complexing agents are then no longer able to keep metal ions in solution. The miscibility and stability of the Trilon AS are excellent, even in highly acidic solutions. Many complexing agents cannot be employed in acidic formulations because they precipitate in the form of their sparingly soluble free acids.

Trilon AS have the advantage that they remain soluble and chemically stable, even in the acidic pH range. The Trilon AS boost the performance of highly alkaline formulations; The Trilon AS can also be employed in acidic formulations. The Trilon AS do not decompose even at an extreme pH. Corrosion The Trilon AS stabilize polyvalent metal ions, which means that they can increase the rate at which metals dissolve. Nevertheless, with the exception of aluminium, an oxidizing agent such as air always has to be present for corrosion to take place. Unalloyed steel is prone to corrosion in media that contain air, but corrosion can be reduced substantially if the pH is in the alkaline range and can be eliminated almost completely if oxygen and other oxidizing agents are excluded. Steel cleaned with the Trilon AS in the slightly alkaline range, which is the optimum pH range for the Trilon AS, is much less prone to corrosion than if Trilon AS is cleaned with acids.

IUPAC NAME:
trisodium;2-[bis(carboxylatomethyl)amino]propanoate; 2-[bis(carboxymethyl)amino]acetic acid

TRADE NAME:

IDRANAL; Complexon I

OTHER NAME:

49784-42-1; 139-13-9

The only type of corrosion that has been observed with the Trilon AS is uniform corrosion: pitting or stress cracking have not been observed in media with a low chloride content. One of the advantages of the Trilon AS is that they can be supplied with a very low chloride content (< 20 mg/kg). The following information on materials is of a very general nature, because corrosion depends on many different factors such as exposure to air, galvanic corrosion caused by the presence of different metals and by the flow patterns of liquids. The compatibility of Trilon AS with different materials needs to be tested in each individual case. The only type of corrosion that has been observed with the Trilon AS is uniform corrosion: pitting or stress cracking have not been observed in media with a low chloride content.

One of the advantages of the Trilon AS is that they can be supplied with a very low chloride content (< 20 mg/kg). The following information on materials is of a very general nature, because corrosion depends on many different factors such as exposure to air, galvanic corrosion caused by the presence of different metals and by the flow patterns of liquids. The compatibility of Trilon AS with different materials needs to be tested in each individual case. Austenitic stainless steels such as AISI/SAE 304, 316 Ti and 321 are very effective for vessels used to store and transport Trilon AS. The corrosion resistance of ferritic carbon steel such as ASTM A201 Grade B (European Material No. P265GH) is limited. A rate of corrosion of 0.01 mm/a has been measured at 50 °C and air exclusion. Crevice corrosion has also occasionally been observed on welded joints, and so we would not recommend storing the Trilon AS in vessels made from unalloyed carbon steel for any prolonged length of time. The rate of corrosion can be reduced by removing the air from the system.
Aluminium and aluminium alloys such as AL 7075 T6 (European Material No. 3.4365) are not resistant to Trilon AS, because Trilon AS is alkaline and aluminium is quickly corroded by strong bases. Solutions that contain Trilon AS are much less corrosive to aluminium if their pH is adjusted to 5 – 7. The following points need to be taken into account when comparing the performance of the Trilon AS with weaker complexing agents. The quantity of complexing agent that is required to sequester a given concentration of calcium ions depends on the strength of the complexing agent.

Trilon AS have a more effective complexing action, and much smaller quantities are required to obtain the same effect as with IDS. The quantities of complexing agents that need to be applied also depend on their active content. The Trilon AS have a higher active content than many competitors’ products because they contain fewer by-products. Inhibiting calcium carbonate Phosphonates and water-soluble polymers are often used to prevent scale calcium carbonate from precipitating and forming scale. These substances act by temporarily delaying the onset of crystallisation. Chelating agents such as the Trilon AS act differently, because they prevent salts from precipitating and forming scale by sequestering the calcium ions. Scale can form if phosphonates or water-soluble polymers are used, depending on the concentrations of calcium ions and polymer or phosphonates, because the calcium ions do not form permanent bonds.

Trilon AS can be used to boost the action of polyacrylates and phosphonates in inhibiting scale formation. They can enhance the overall performance of scale inhibitor formulations. There is a need for phosphonates to be replaced in many applications because of issues concerning the effects of phosphorus compounds on aquatic life and water quality. Aminocarboxylates often perform better at a high pH, but phosphonates perform better at a low pH because they are more soluble than many aminocarboxylates. The solubility of the Trilon AS at a low pH is very good and they are quite capable of competing with phosphonates. The Trilon AS are an effective alternative to EDTA for removing calcium phosphate scale. The high performance of EDTA remains unsurpassed, but the performance of the Trilon AS is by far the best of all of the readily biodegradable complexing agents. Weak complexing agents such as iminodisuccinate (IDS), ethylenediaminedisuccinate (EDDS), hydroxyethyliminodiacetate (HEIDA) and citrate are completely ineffective for dissolving stubborn calcium phosphate scale.

Trilon AS are the best choice when Trilon AS comes to finding a readily biodegradable complexing agent for dissolving calcium phosphate scale. Fatty acids and soaps also react with calcium ions to form sparingly soluble deposits in the kitchen, in the bathroom and on textiles. Lime, magnesium and heavy metals can form soaps that precipitate and give rise to spots and stains, dull surfaces, a rancid odour and poor wettability. They can also cause uneven dyeing, turbidity and changes in colour and cause rubber to perish. The Trilon AS are very effective for dissolving the scale formed by lime soaps and preventing scale from building up, and they are much more effective than weak complexing agents such as IDS or HEIDA. The Trilon AS can be used to stabilise bleach. They prevent hydrogen peroxide decomposing too quickly by sequestering iron, manganese and copper ions.

Trilon AS are an effective alternative to established bleach stabilisers such as EDTA, but the performance of EDTA is still unsurpassed. If local restrictions prevent EDTA from being used, the Trilon AS and Trilon P Liquid supplied by BASF are effective alternatives for stabilising bleach. Trilon AS is an inherently bioeliminable complexing agent that can also be used in combination with the Trilon AS to sequester iron, manganese and copper ions.

Trilon AS knowns of no ill effects that could have resulted from using the Trilon AS for the purpose for which they are intended and from. processing them in accordance with current practice. According to the experience we have gained over many years and other information at our disposal, the Trilon AS do not exert any harmful effects on health, provided that they are used properly, due attention is given to the precautions necessary for handling chemicals, and the information and advice given in our Safety Data Sheets are observed. Storage Trilon AS should not be stored at temperatures below 0 °C, because this can cause them to precipitate. Trilon AS can be reconstituted by heating Trilon AS briefly to 40 – 50 °C and stirring. Trilon M Powder is hygroscopic, and so Trilon AS should be kept in tightly sealed containers.

Trilon AS have a shelf life of one year in their tightly sealed original packaging. We would recommend storing Trilon AS in tanks made from AISI 316 Ti or AISI 321 stainless steel. Ecology and toxicology The Trilon AS have an excellent ecological and toxicological profile and there are no restrictions on their use in many applications. The active ingredient contained in the Trilon AS, MGDA, is classified as being readily biodegradable according to the OECD criteria. In these tests, the test substance is broken down by bacteria under standardised conditions. The Trilon AS are classified as being readily biodegradable. The products supplied by BASF conform to ecological and toxicological stringent standards in order to protect the environment. BASF has submitted the Trilon AS to a thorough programme of tests and possesses a very extensive collection of data on the Trilon AS. Trilon AS T is an aqueous solution of the trisodium salt of methylglycinediacetic acid (Na3MGDA). Trilon AS finds application in detergents, cleaning, textiles, soap, metal plating, oil and gas, and water-softening products.

Trilon AS is readily biodegradable. Trilon AS, methylglycinediacetic acid trisodium salt (MGDA-Na3) or trisodium α-DL-alanine diacetate (α-ADA), is the trisodium anion of N-(1-carboxyethyl)iminodiacetic acid and a tetradentate complexing agent. Trilon AS forms stable 1:1 chelate complexes with cations having a charge number of at least +2, e.g. the "hard water forming" cations Ca2+ or Mg2+. α-ADA is distinguished from the isomeric β-alaninediacetic acid by better biodegradability and therefore improved environmental compatibility. The patent literature on the industrial synthesis of Trilon AS describes the approaches for solving the key requirements of a manufacturing process that can be implemented on an industrial scale, characterized by Achieving the highest possible space-time yields Simple reaction control at relatively low pressures and temperatures. Achieving the lowest possible levels of impurities, particularly nitrilotriacetic acid, which is suspected of being carcinogenic. Use of inexpensive raw materials, e.g. instead of pure L-alanine the raw mixture of Strecker synthesis from methanal, hydrogen cyanide and ammonia. Avoidance of complex and yield-reducing isolation steps; instead, direct further use of the crude reaction solutions or precipitates in the following process step. An obvious synthesis route to α-alaninediacetic acid is from racemic α-DL-alanine, which provides racemic α-ADA by double cyanomethylation with methanal and hydrogen cyanide, hydrolysis of the intermediately formed diacetonitrile to the trisodium salt and subsequent acidification with mineral acids in a 97.4% overall yield. In a later patent specification, however, only an overall yield of 77% and an NTA content of 0.1% is achieved with practically the same quantities of substances and under practically identical reaction conditions.

Trilon AS has recently been described, in which alanine is ethoxylated with ethylene oxide in an autoclave to form bis-hydroxyethylaminoalanine and then oxidized to α-ADA at 190 °C with Raney copper under pressure. BTC offers under the brand name Trilon AS a broad product range of high performance and innovative complexing agents, also known as chelating agents. Chelating agents are able to prevent the deleterious impact of calcification in detergents and cleaning agents. The chelating agents of the Trilon AS product range are used, besides others, to avoid the formation of poorly soluble precipitations, to prevent the undesirable decomposition of constituents of formulations, to prevent discolouration or rancidity. They bind and mask reliably the metal ions and guarantee smooth processing and efficient employment of water. The production of detergents and cleaners triggers a huge demand complexing agents which can be fulfilled with BTCs Trilon AS grades.

Trilon AS grades for the prevention of calcification in detergents and cleaning agents BTC’s Trilon AS chelating agents belong mainly to the class of amino carboxylates which are organic complexing agents. They are available in powder or in liquid form, or as granules; as pure acid version or salt version; in very high purity as high-quality grades for special applications. Household and industrial cleaning formulations include chelating additives to soften hard water. Thus, the formation of lime scale, inorganic scale formation is prevented. Trilon AS grades form typically 1:1 complexes. The high stability of these compounds makes them ideal for many industrial processes. They show a very good solubilisation property of the formed complexes. Based on the used amino carboxylic acid the following organic chelating additives are available: Trilon AS B grades; ethylenediamine tetraacetic acid, or Na-salt (EDTA).

Trilon AS M grades; methylglycine diacetic acid (MGDA). Trilon AS Ultimate grades; modified MGDA. Trilon AS P grade (modified anionic polyamine). The Trilon AS P grade is a non-amino polycarboxylate. Trilon AS provides outstanding chelating properties especially for chelating iron molecules in alkaline areas. Trilon AS M grades represent the newest generation of complexing agents. Based on methylglycine diacetic acid the product provides a very good chelating performance in addition with a readily biodegradability property. The excellent ecological and toxicological profile of Trilon AS M has been verified in various repeated studies.
In aqueous solutions, Trilon AS competes for metal ions with other anions, such as hydroxide, sulphate, sulphide, carbonate and oxalate, that form sparingly soluble metal salts. The formation of chelates reduces the concentration of free metal ions [Men+] to such an extent that the solubility products of many sparingly soluble metal salts are no longer exceeded. The result is that the salts no longer precipitate or may even redissolve. Conditional stability constants take into account the stability constant K as well as the acid base dissociation equilibria. The following curves show the conditional stability constants for selected NTA chelates. Trilon AS is chemically very stable.

Trilon AS exhibits a higher stability than other organic chelating agents such as citric acid, tartaric acid and gluconates – especially at elevated temperatures. Whereas inorganic sequestring agents (e.g. phosphates) may hydrolyse at high temperatures, Trilon AS is stable even when heated to 200 °C under pressure. Trilon AS is resistant to strong acids and bases. Trilon AS is gradually broken down by chromic acid, potassium permanganate and other strong oxidizing agents. Stability in the presence of hydrogen peroxide, percarbonate and perborate is sufficient for joint application. Nevertheless, we do not recommend combining Trilon AS and peroxides in liquid formulations. Sodium hypochlorite and other substances that release chlorine cause Trilon AS to decompose. Alkaline earth and heavy metal complexes are broken down.

Trilon AS stabilizes polyvalent metal ions, which means that Trilon AS can increase the rate at which metals dissolve. Nevertheless, with the exception of aluminium, an oxidizing agent such as air always has to be present for corrosion to take place. Unalloyed steel is prone to corrosion in media that contain air, but corrosion can be reduced substantially if the pH is in the alkaline range and can be eliminated almost completely if oxygen and other oxidizing agents are excluded. Steel that is cleaned with Trilon AS in the slightly alkaline range, which is the optimum pH range for the Trilon AS, is much less prone to corrosion than if Trilon AS is cleaned with acids.
The only type of corrosion that has been with Trilon AS is uniform corrosion: pitting or stress cracking have not been observed in media with a low chloride content. One of the advantages of Trilon AS is that Trilon AS can be supplied with very low chloride contents.The following information on materials is of a very general nature, because corrosion depends on many different factors such as exposure to air, galvanic corrosion caused by the presence of different materials and by the flow patterns of liquids. The compatibility of Trilon AS with different materials needs to be tested in each individual case.

Trilon AS is readily biodegradable in standard OECD tests, Trilon AS is completely mineralised and Trilon AS does not form any persistent metabolites. The removal rate for Trilon AS due to biodegradation usually more than in sewage treatment plants is 95%.
We are not aware of any ill effect that can result from using Trilon AS for the purpose for which Trilon AS is intended and from processing Trilon AS in accordance with current practices. According to the experience that we have gained over many years and other information at our disposal, Trilon AS does not exert harmful effects on health, provided Trilon AS is used properly, due attention is given to the precautions necessary for handling chemicals, and the information and advice given in our Safety Data Sheets are observed.
Some physical properties of Trilon AS are listed in the table below. These are typical values only and not all of them are monitored on a regular basis. They are correct at the time of publication and do not necessarily form part of the product specification. The most important property of Trilon AS is its ability to form watersoluble complexes with polyvalent ions (e.g. calcium, magnesium, lead, copper, zinc, cadmium, mercury, manganese, iron) over a wide pH range from 2 to 13,5.

Trilon AS competes for metal ions with other anions, such as hydroxide, sulphate, sulphide, carbonate and oxalate, that form sparingly soluble metal salts. The formation of chelates reduces the concentration of free metal ions [Men+] to such an extent that the solubility products of many sparingly soluble metal salts are no longer exceeded. The result is that the salts no longer precipitate or may even redissolve. Trilon AS exhibits a higher stability than other organic chelating agents such as citric acid, tartaric acid and gluconates – especially at elevated temperatures. Whereas inorganic sequestring agents (e.g. phosphates) may hydrolyse at high temperatures, Trilon AS is stable even when heated to 200 °C under pressure.

Trilon AS is resistant to strong acids and bases. Trilon AS is gradually broken down by chromic acid, potassium permanganate and other strong oxidizing agents. Stability in the presence of hydrogen peroxide, percarbonate and perborate is sufficient for joint application. Nevertheless, we do not recommend combining Trilon AS and peroxides in liquid formulations. Trilon AS stabilizes polyvalent metal ions, which means that Trilon AS can increase the rate at which metals dissolve. Nevertheless, with the exception of aluminium, an oxidizing agent such as air always has to be present for corrosion to take place. Unalloyed steel is prone to corrosion in media that contain air, but corrosion can be reduced substantially if the pH is in the alkaline range and can be eliminated almost completely if oxygen and other oxidizing agents are excluded.

Steel that is cleaned with Trilon AS in the slightly alkaline range, which is the optimum pH range for the Trilon AS, is much less prone to corrosion than if Trilon AS is cleaned with acids. The only type of corrosion that has been with Trilon AS is uniform corrosion: pitting or stress cracking have not been observed in media with a low chloride content. One of the advantages of Trilon AS is that Trilon AS can be supplied with very low chloride contents. The following information on materials is of a very general nature, because corrosion depends on many different factors such as exposure to air, galvanic corrosion caused by the presence of different materials and by the flow patterns of liquids.

Trilon AS is mainly used as a chelating and eluting agent and is found in laundry detergents. Exposure toTrilon ASirritates the skin, eyes and respiratory tract and causes kidney and bladder damage. Trilon ASis reasonably anticipated to be a human carcinogen. Trilon AS (α-ADA) finds due to its ability to form stable chelate complexes with polyvalent ions (in particular the water hardening agents Ca2+ and Mg2+, as well as transition and heavy metal ions such as Fe3+, Mn2+, Cu2+, etc.) use in water softening, in detergents and cleaning agents, in electroplating, cosmetics, paper and textile production. Trilon AS chelating agent improves cleaning performance in hard surface, automatic dishwasher and laundry operations. I&l customers can use lower concentrations, due to its low molecular weight, of this strong complexing agent in their cleaning formulations, making Trilon AS more cost effective. This product is effective in both alkaline and acidic cleaners, and also demonstrates effective cleaning ability in a variety of applications, including general purpose cleaners, floor care products, warewashing detergents, disinfectants and sanitizers, laundry detergents, automatic dishwashers, vehicle wash aids, and hand cleansers.

Trilon AS are chemically very stable. The Trilon AS have been shown to be very stable compared to other organic complexing agents such as citric acid, tartaric acid and gluconates, especially at high temperatures. The Trilon AS are resistant to strong acids and strong bases. They are gradually broken down by chromic acid, potassium permanganate and other strong oxidizing agents. The Trilon AS have excellent chemical stability under a wide range of conditions, and this ensures that formulations that contain Trilon AS remain effective over long periods. pH stability The Trilon AS are resistant to being broken down across the whole pH 2 – 14 range, even at elevated temperatures. Whereas inorganic sequestring agents (eg. phosphates) may hydrolyse at high temperatures, Trilon AS are stable even when heated to 200 °C under pressure. Many complexing agents cannot be employed in acidic formulations because they precipitate in the form of their sparingly soluble free acids. The Trilon AS have the advantage that they remain soluble and chemically stable, even in the acidic pH range. Aminocarboxylates often perform better at a high pH, but phosphonates perform better at a low pH because they are more soluble than many aminocarboxylates. The solubility of the Trilon AS at a low pH is very good and they are quite capable of competing with phosphonates.

Trilon AS are very effective for dissolving the scale formed by lime soaps and preventing scale from building up, and they are much more effective than weak complexing agents such as IDS. The Trilon AS have a shelf life of one year in their tightly sealed original packaging. Properties of Trilon AS grades for the prevention of calcification in detergents and cleaning agents. Trilon AS grades form typically 1:1 complexes. The high stability of these compounds makes them ideal for many industrial processes. They show a very good solubilisation property of the formed complexes.

Green chelating agentTrilon AS as chelating agent, is applicable to a variety of fields. Meanwhile, it has excellent toxicological safety property and stable biodegradability.
As a metal ion chelating agent, Trilon AS can chelate metal ions to form stable soluble complexes.
Trilon AS can be used in wide pH scope, and create synergistic effect with boicides in the system.
Trilon AS can work as substitute for salts of phosphonates, NTA, EDTA, citrate and the other chelating agents in detergent.
Trilon AS is a stablizer for sodium perborate and sodium percarbonate and effective builder in non-phosphor detergent formulation.Trilon AS was proofed as high-efficiency bleaching and stubborn strains removing ability in commercial non-phosphor dishwashing formulations.
Trilon AS has wonderful clean ability in high efficiency washing powder, washing liquid and soap detergent, e.g. after adding Trilon AS into various soaps, it has the effect to prevent rancidity, color change and dirt precipitation.
Trilon AS is used as scale remover and scale inhibitor to prevent scale formulation and soften water, which can also resolve metal salts and hydroxide to clean indissolvable salt scales in various industries.

What Is Trilon AS?
Methylglycinediacetic acid, also called MGDA, is a clear, yellowish liquid or solid granule that improves the efficiency of cleaning products by removing residues.

What Does Trilon AS Do in Our products?
Methylglycinediacetic acid is a chelating agent used in household cleaning products.[2] It is helpful in removing lime scale due to its power to dissolve fatty acids containing stains. It can be a substitute for phosphates.[3] We use it in our dishwasher detergent.

Why Puracy UsesTrilon AS
Methylglycinediacetic acid is a chelating agent that prevents hard-water stains from forming. It is more biodegradable than some traditional chelating agents.[5,6] Whole Foods has deemed the ingredient acceptable in its body care and cleaning product quality standards.

HowTrilon AS Is Made
Commercially, manufacturing methylglycinediacetic acid involves first dissolving the amino acid alanine in water. The solution is then mixed with formaldehyde. The solution is then sent to a saponification reactor, at which point the MGDA forms. After separating out the MGDA, hydrogen peroxide is added. The final product is either cooled and stored as a liquid or further refined into a solid.

Physical Form - Fine Yellowish granule

Use to replace tetrasodium edta in bar soap with an environmentally friendly chelate to prevent rancidity and extend shelf life.

Effectively binds calcium and magnesium ions. Can be used to replace phosphates and phosphonates in all types of products - cleaners. Biodegradable.

Trilon AS is an environmentally friendly chelate and cleaner. It is approved by, and listed on the EPA Design for the Environment Certifacation Program (DFE).

The Trilon PM Organic chelating agents are used to control the concentration of metal ions in aqueous systems. This product is the Trilom M Powder.

The most important property of Trilon PM types is their ability to form water-soluble complexes with polyvalent ions (eg. calcium, magnesium, lead, copper, zinc, cadmium, mercury, manganese, iron) over a wide pH range from 2 to 13.5. MGDA usually forms 1 : 1 complexes, i. e. 1 mol of MGDA chelates binds to 1 mol of metal ions. These complexes remain stable, especially in alkaline media and even at temperatures of up to 100 °C.

Character:
The main character of Trilon AS is excellent chelating ability, which can replace traditional chelating agents.

The dosage should be adjusted according to actual application and effects.

The typical chelating values are as follows:

60 mg Ca2+/g Trilon AS,
95 mg Cu2+/g Trilon AS,
95 mg Zn2+/g Trilon AS,
80 mg Fe2+/g Trilon AS,
35 mg Mg2+/g Trilon AS,
80 mg Mn2+/g Trilon AS.
Trilon AS is a eco-freindly, fast-working, strong builder, biodegradable and not dangerous. Trilon AS is a small molecule chelating agent. Its structure is similar to NTA, and easily biodegradable.

Trilon AS is a new green degradable chelating agent, which replaces traditional NTA, phosphonate, and EDTA.

Trilon AS Liquid T is an aqueous solution of the trisodium salt of methylglycinediacetic acid (Na3MGDA). It finds application in detergents, cleaning, textiles, soap, metal plating, oil and gas, and water-softening products. Trilon AS liquid is readily biodegradable.

TRILON AS is organic chelating agent used to control the concentration of metal ions in aqueous systems.
Chemical nature: The active ingredient contained in Trilon AS is nitrilotriacetic acid (NTA-H3) with CAS-No. 139-13-9.

TRILON AS is Nitrilotriacetic acid, C6H9NO6, is an aminocarboxylic acid with four functional groups.
Properties
Some physical properties of Trilon AS are listed in the table below.&
These are typical values only and not all of them are monitored on a regular basis.
They are correct at the time of publication and do not necessarily form part of the product specification

Distribution of particles
The following curve shows the distribution of particles of Trilon AS (all values are approximate)
Complex formation
The most important property of Trilon AS is its ability to form watersoluble complexes with polyvalent ions (e.g. calcium, magnesium, lead, copper, zinc, cadmium, mercury, manganese, iron) over a wide pH range from 2 to 13.5.
NTA usually forms 1 : 1 complexes, i. e. 1 mol of NTA chelates binds to 1 mol of metal ions, but it can also form 2 : 1 complexes with some metals if a stoichiometric excess of NTA is present
These complexes remain stable, especially in alkaline media and even at temperatures of up to 100 °C.
In aqueous solutions, Trilon AS competes for metal ions with other anions, such as hydroxide, sulphate, sulphide, carbonate and oxalate, that form sparingly soluble metal salts.
The formation of chelates reduces the concentration of free metal ions [Men+] to such an extent that the solubility products of many sparingly soluble metal salts are no longer exceeded.
The result is that the salts no longer precipitate or may even redissolve.

Trilon AS is resistant to strong acids and bases.
It is gradually broken down by chromic acid, potassium permanganate and other strong oxidizing agents.
Stability in the presence of hydrogen peroxide, percarbonate and perborate is sufficient for joint application.
Nevertheless, we do not recommend combining Trilon AS and peroxides in liquid formulations.

Sodium hypochlorite and other substances that release chlorine cause Trilon AS to decompose.
Alkaline earth and heavy metal complexes are broken down.

Corrosion: Trilon AS stabilizes polyvalent metal ions, which means that it can increase the rate at which metals dissolve.
Nevertheless, with the exception of aluminium, an oxidizing agent such as air always has to be present for corrosion to take place.
Unalloyed steel is prone to corrosion in media that contain air, but corrosion can be reduced substantially if the pH is in the alkaline range and can be eliminated almost completely if oxygen and other oxidizing agents are excluded.
Steel that is cleaned with Trilon AS in the slightly alkaline range, which is the optimum pH range for the Trilon AS, is much less prone to corrosion than if it is cleaned with acids.

The only type of corrosion that has been with Trilon AS is uniform corrosion: pitting or stress cracking have not been observed in media with a low chloride content.
One of the advantages of Trilon AS is that it can be supplied with very low chloride contents.

The following information on materials is of a very general nature, because corrosion depends on many different factors such as exposure to air, galvanic corrosion caused by the presence of different materials and by the flow patterns of liquids. <br>
The compatibility of Trilon AS with different materials needs to be tested in each individual case.

TRILON AS

TRILON AS is an organic chelator used to control the concentration of metal ions in aqueous systems.

Chemical nature: The active ingredient in Trilon AS is nitrilotriacetic acid (NTA-H3) with the CAS number. 139-13-9.

TRILON AS is nitrilotriacetic acid, C6H9NO6, is an aminocarboxylic acid with four functional groups.

Appearance: Trilon AS is a fine white powder.

Handling and storage of Trilon AS

Materials

The following materials can be used for tanks and drums:

a) Stainless steel 1.4541 - Stainless steel AISI 321 (X6 CrNiTi 1810)

b) Stainless steel 1.4571 - Stainless steel AISI 316 Ti (X6 CrNiMoTi 17122)

c) Stainless steel 1.4306 - Stainless steel AISI 321 L (X2 CrNi 1911)

d) high density polyethylene (HDPE)

e) low density polyethylene (LDPE)

Lifetime

Provided it is stored correctly and the drums are kept tightly closed, Trilon AS has a shelf life of at least 36 months in its original packaging.

Properties

Some physical properties of Trilon AS are listed in the table below.

These are only typical values and not all of them are checked regularly.

They are correct at the time of publication and do not necessarily form part of the product specification.

Unit value Trilon AS

Physical form (25 ° C): powder

Molecular Weight (M.W.) g / mol: 191

Concentration (pot. Titration with FeCl3 solution)

calculated as trisodium salt (NTA-Na3): approx. 135%

calculated as free acid (NTA-H3): approx. 100%

Bulk density (DIN ISO 697, diameter 40 mm) g / L: approx. 800

PH value (DIN 19268, 1% in water, 23 ° C): approx. 2.2 (slurry)

Calcium binding capacity (BASF method, pH 11) mg CaCO3 / g t.q .: approx. 525

Water content (DIN EN 13267, Karl Fischer)%: approx. 0.2

Melting point (DIN 51004) ° C: approx. 245

Solubility in water (BASF method, 25 ° C g in 1 liter: approx. 1

Particle distribution

The following curve shows the distribution of the particles of Trilon AS (all values are approximate):

Complex training

The most important property of Trilon AS is its ability to form water soluble complexes with polyvalent ions (e.g. calcium, magnesium, lead, copper, zinc, cadmium, mercury, manganese, iron) over a wide pH range from 2 to 13.5.

NTA generally forms 1: 1, i complexes. e. 1 mole of NTA chelates binds to 1 mole of metal ions, but it can also form 2: 1 complexes with some metals if a stoichiometric excess of NTA is present.

These complexes remain stable, especially in alkaline media and even at temperatures up to 100 ° C.

From the law of mass action, the equation of the stability constant K for 1: 1 complexes can be written as follows:

[MeZ (m-n) -] K = [Men +] [Zm-]or

[MeZ (m-n) -] is the concentration of the chelate formed,

[Men +] is the concentration of free and positively charged metal ions, [Zm-] is the concentration of the ligand anion, in this case NTA, K is the stability constant of the chelate.

Logarithmic stability constants (log K) for MGDA complexes and certain metal ions:

Ion metal log K

Fe3 + 15.9

Hg2 + 14.6

Cu2 + 12.9

Ni2 + 11.5

Pb2 + 11.3

Zn2 + 10.7

Co2 + 10.4

Nd2 + 9.8

Fe2 + 8.3

Mn2 + 7.5

Ca2 + 6.4

Mg2 + 5.5

Ba2 + 4.8

NTA-H3 is a tribasic acid which dissociates in three stages.

The pKa acid dissociation constants are as follows.

NTA-H3 pKa1 1.9

NTA-H2- pKa2 2.5

NTA-H2- pKa3 9.7

In aqueous solutions, Trilon AS competes for metal ions with other anions, such as hydroxide, sulfate, sulfide, carbonate and oxalate, which form poorly soluble metal salts.

The formation of chelates reduces the concentration of free metal ions [Men +] to such an extent that the solubility products of many poorly soluble metal salts are no longer exceeded.

The result is that the salts no longer precipitate or can even redissolve.

The conditional stability constants [log Kcond] take into account the stability constant K as well as the acid-base dissociation equilibria.

The following curves show the conditional stability constants for the selected NTA chelates.

Chemical stability: Trilon AS is chemically very stable.Trilon AS exhibits higher stability than other organic chelating agents such as citric acid, tartaric acid and gluconates - especially at elevated temperatures.

While inorganic sequestering agents (eg phosphates) can hydrolyze at high temperatures, Trilon AS is stable - even when heated to 200 ° C under pressure.

Trilon AS melts at

approx. 245 ° C.

Trilon AS is resistant to strong acids and bases.

It is gradually broken down by chromic acid, potassium permanganate and other strong oxidizing agents.

Stability in the presence of hydrogen peroxide, percarbonate and perborate is sufficient for joint application.

However, we do not recommend combining Trilon AS and peroxides in liquid formulations.

Sodium hypochlorite and other substances which release chlorine cause the decomposition of Trilon AS.

Alkaline earth and heavy metal complexes are broken down.

Corrosion: Trilon AS stabilizes polyvalent metal ions, which means it can increase the rate of metal dissolution.

However, with the exception of aluminum, an oxidizing agent such as air must always be present for corrosion to occur.

Unalloyed steel is prone to corrosion in media containing air, but corrosion can be greatly reduced if the pH is in the alkaline range and can be removed almost completely if oxygen and other oxidizing agents are present. excluded.

Steel cleaned with Trilon AS in the slightly alkaline range, which is the optimum pH range for Trilon AS, is much less prone to corrosion than if it is cleaned with acids.

The only type of corrosion that has been with Trilon AS is uniform corrosion: pitting or stress cracking has not been observed in low chloride media.

One of the advantages of Trilon AS is that it can be supplied with very low chloride contents.

The following material information is very general in nature, as corrosion depends on many different factors such as exposure to air, galvanic corrosion caused by the presence of different materials, and fluid flow patterns.

The compatibility of Trilon AS with different materials must be tested in each individual case.

Ecology and toxicology: Trilon AS is easily biodegradable in OECD standard tests, it is completely mineralized

and it does not form any persistent metabolites.

The removal rate of Trilon AS due to biodegradation is generally higher than in sewage treatment plants is 95%.

Safety: We are not aware of any adverse effects that may result from the use of Trilon AS for the purpose for which it is intended and its treatment in accordance with current practices.

From the experience we have gained over many years and other information available to us, Trilon AS does not exert any harmful effects on health, provided it is used correctly, that a particular attention is paid to the precautions necessary for handling chemicals, as well as to the information and advice given in our safety data sheets.

Labeling: Please consult the current Safety Data Sheets for information on the classification and labeling of our products and other safety related information.