PRODUCTS

DISODIUM TRIOXOSILICATE

Disodium Trioxosilicate is also used as a glue called "soluble glass".
Disodium Trioxosilicate is used hair coloring kits
Disodium Trioxosilicate is used in the washing industry, such as super concentrated detergent, laundry detergent, laundry cream, dry cleaning agent, fiber bleach, fabric bleach.

CAS Number: 6834-92-0
pentahydrate: 10213-79-3
nonahydrate: 13517-24-3
EC Number: 600-279-4229-912-9
Molecular Formula: Na2O3Si
Molar Mass: 122.06 g/mol

SYNONYMS:
WATER GLASS, SILICA STANDARD, SODIUM-M-SILICATE, Sodium metasilicate, SODIUM METASILICATE, SODIUM SILICATE, META, disodium metasilicate, SODIUM SESQUISILICATE, DISODIUM TRIOXOSILICATE, Sodium Metasilicate Anhydrous, SODIUM METASILICATE N-HYDRATE, Sodium metasilicate, Disodium metasilicate, Disodium trioxosilicate, Sodium metasilicate, Sodium metasilicate anhydrous, Disodium oxosilanediolate, Sodium silicate (meta), Water glass (in some contexts)

Disodium Trioxosilicate is a salt of silicic acid, belonging to inorganic salt products, molecular formula Na2SiO3 · nH2O, is a non-toxic, tasteless, pollution-free white powder or crystalline particles, soluble in water, insoluble in alcohol and acid, aqueous solution is alkaline, easily hygroscopic deliquescence in the air, with descaling, emulsification, dispersion, wet, permeability and pH buffer capacity.

Disodium Trioxosilicate is a low molecular weight Crystal prepared by the hydrothermal reaction of ordinary bubbling alkali and caustic soda.
There are anhydrous, pentahydrate, and nonahydrate.
Disodium Trioxosilicate is an emergency product with low technical content that was developed in an urgent need of it in the Eighties of the last century.

Because its melting point is only 42 ℃, when it is 30~40 ℃, Disodium Trioxosilicate will release crystal water, to the use of inconvenience, storage is easy to become liquid or paste, is gradually being eliminated.
Due to some user habits and some areas of crystal water is not being very concerned about, Disodium Trioxosilicate still has a certain market.

In the inorganic electrolyte, Disodium Trioxosilicate has the highest active alkalinity and PH buffer index, and has strong wetting, emulsification and saponification of oil, dispersion and suspension of dirt has excellent performance, and can prevent the re-deposition of dirt.

Disodium Trioxosilicate is used in textile, electroplating, packing and catalyst.
Strong decontamination capacity, large buffer capacity, can neutralize acidic dirt, fat and oil emulsification, anti-flocculation effect on inorganic matter, anti-corrosion effect on metal.

Disodium trioxosilicate is a chemical compound with the formula Na₂SiO₃.
Disodium Trioxosilicate is a white, crystalline solid that is highly soluble in water.
Disodium Trioxosilicate is often referred to as sodium silicate or water glass.

Disodium Trioxosilicate is the chemical substance with formula Na2SiO3, which is the main component of commercial sodium silicate solutions.
Disodium Trioxosilicate is an ionic compound consisting of sodium cations Na+ and the polymeric metasilicate anions [–SiO2−3–]n.

Disodium Trioxosilicate is a colorless crystalline hygroscopic and deliquescent solid, soluble in water (giving an alkaline solution) but not in alcohols.
Disodium Trioxosilicate is registered under the REACH Regulation and is manufactured in and / or imported to the European Economic Area, at ≥ 10 000 to < 100 000 tonnes per annum.

Disodium Trioxosilicate is the same as disodium metasilicate, often referred to in IUPAC as disodium oxosilanediolate.
Disodium Trioxosilicate’s an inorganic sodium silicate salt, belonging to the “soluble silicates” family.
The molecular formula of Disodium Trioxosilicate is often given as Na2SiO3 (metasilicate).
According to an MSDS, the molecular (formula) mass of Disodium Trioxosilicate is ~ 122.08 g/mol for the anhydrous form.

USES and APPLICATIONS of DISODIUM TRIOXOSILICATE:
Detergents / Cleaners: Disodium Trioxosilicate is used in detergents, degreasers, and industrial cleaning agents because of its strong alkalinity and ability to break down organic matter.
Rust Removal / Metal Treatment: Disodium Trioxosilicate can be used in formulations for metal cleaning, as a builder in detergents or to passivate surfaces.

Construction / Silicate Cements: Soluble silicates like Disodium Trioxosilicate can be used in specialties for concrete sealing or as a binder.
Water Treatment: Disodium Trioxosilicate is sometimes used in water treatment or alkaline buffering.
Corrosion Inhibitor: In certain formulations, Disodium Trioxosilicate helps protect metal surfaces from corrosion due to its alkaline nature.

Disodium Trioxosilicate reacts with acids to produce silica gel.
Cements and Binders - dehydrated Disodium Trioxosilicate forms cement or binding agent.
Pulp and Par - Disodium Trioxosilicate is used sizing agent and buffer/stabilizing agent when mixed with hydrogen peroxide.

Soaps and Detergents - Disodium Trioxosilicate is used as an emulsifying and suspension agent.
Automotive applications of Disodium Trioxosilicate - decommissioning of old engines (CARS program), cooling system sealant, and exhaust repair.
Egg Preservative - Disodium Trioxosilicate seals eggs, increasing shelf life.

Crafts - Disodium Trioxosilicate forms "stalagmites" by reacting with and precipitating metal ions.
Disodium Trioxosilicate is also used as a glue called "soluble glass".
Disodium Trioxosilicate is used hair coloring kits

Disodium Trioxosilicate is used in the washing industry, such as super concentrated detergent, laundry detergent, laundry cream, dry cleaning agent, fiber bleach, fabric bleach, etc., also a large number of used for metal surface cleaning agent, beer bottle, aerosol detergent, after fully dissolved.

Disodium Trioxosilicate can be used as metal rust inhibitor, scale cleaning agent and electric device cleaning agent, and can be used as food industry detergent.
Disodium Trioxosilicate is used by consumers, in articles, by professional workers (widespread uses), in formulation or re-packing, at industrial sites and in manufacturing.

Disodium Trioxosilicate can also be used as mud consistency regulator and mud coagulant in crude oil and natural drilling and excavation engineering; in the construction industry, it is used as a coagulant for preparing acid-resistant mortar, acid-resistant commercial concrete and cement.

In the paper industry, Disodium Trioxosilicate can be used as an adhesive, an ink agent, and a paper surface treatment agent.
Disodium Trioxosilicate is used in the textile industry as a printing and dyeing auxiliaries, fabric pre-treatment agent;
Disodium Trioxosilicate can also be used as soap filler, detergent, egg preservative, and vegetation molecular sieve, silicic acid and fire materials.

Disodium Trioxosilicate has lubricity, can be used for the production of ceramic body mud.
With strong alkalinity, strong decontamination ability, large buffer capacity, Disodium Trioxosilicate can neutralize acidic dirt.

Emulsification of fat and oil, has anti-flocculation effect on inorganic substances, has anti-corrosion effect on metals, so Disodium Trioxosilicate is one of the main components of super concentrated detergent powder, and is also used in dishwashing detergent, food industry detergent, metal detergent and waste paper deinking.

Disodium Trioxosilicate is used in the following products: adhesives and sealants, pH regulators and water treatment products, textile treatment products and dyes, metal surface treatment products, washing & cleaning products, biocides (e.g. disinfectants, pest control products), coating products and non-metal-surface treatment products.

Disodium Trioxosilicate is used in the following areas: formulation of mixtures and/or re-packaging, building & construction work and mining.
Disodium Trioxosilicate is used for the manufacture of: mineral products (e.g. plasters, cement), textile, leather or fur and furniture.
Release to the environment of Disodium Trioxosilicate can occur from industrial use: in the production of articles, formulation in materials, as processing aid, in processing aids at industrial sites and formulation of mixtures.

Other release to the environment of Disodium Trioxosilicate is likely to occur from: indoor use (e.g. machine wash liquids/detergents, automotive care products, paints and coating or adhesives, fragrances and air fresheners) and outdoor use.
Release to the environment of Disodium Trioxosilicate can occur from industrial use: manufacturing of the substance.

Disodium Trioxosilicate is widely used in various types of washing industry.
Disodium Trioxosilicate is used by consumers, in articles, by professional workers (widespread uses), in formulation or re-packing, at industrial sites and in manufacturing.

Disodium Trioxosilicate is used in the following products: cosmetics and personal care products, washing & cleaning products, adhesives and sealants, air care products, biocides (e.g. disinfectants, pest control products), coating products, finger paints, non-metal-surface treatment products and polishes and waxes.

Other release to the environment of Disodium Trioxosilicate is likely to occur from: indoor use in long-life materials with low release rate (e.g. flooring, furniture, toys, construction materials, curtains, foot-wear, leather products, paper and cardboard products, electronic equipment), outdoor use in long-life materials with low release rate (e.g. metal, wooden and plastic construction and building materials), outdoor use in long-life materials with high release rate (e.g. tyres, treated wooden products, treated textile and fabric, brake pads in trucks or cars, sanding of buildings (bridges, facades) or vehicles (ships)) and indoor use in long-life materials with high release rate (e.g. release from fabrics, textiles during washing, removal of indoor paints).

Disodium Trioxosilicate can be found in complex articles, with no release intended: vehicles and machinery, mechanical appliances and electrical/electronic products (e.g. computers, cameras, lamps, refrigerators, washing machines).
Disodium Trioxosilicate is intended to be released from scented: clothes.

Disodium Trioxosilicate can be found in products with material based on: stone, plaster, cement, glass or ceramic (e.g. dishes, pots/pans, food storage containers, construction and isolation material), fabrics, textiles and apparel (e.g. clothing, mattress, curtains or carpets, textile toys) and leather (e.g. gloves, shoes, purses, furniture).

Disodium Trioxosilicate is used in the following products: washing & cleaning products, pH regulators and water treatment products, laboratory chemicals, adhesives and sealants, coating products, finger paints, non-metal-surface treatment products, polishes and waxes, polymers and cosmetics and personal care products.

Disodium Trioxosilicate is used in the following areas: building & construction work, formulation of mixtures and/or re-packaging, health services, printing and recorded media reproduction, municipal supply (e.g. electricity, steam, gas, water) and sewage treatment and mining.
Disodium Trioxosilicate is used for the manufacture of: mineral products (e.g. plasters, cement), food products, pulp, paper and paper products, fabricated metal products, textile, leather or fur, metals and furniture.

Other release to the environment of Disodium Trioxosilicate is likely to occur from: indoor use (e.g. machine wash liquids/detergents, automotive care products, paints and coating or adhesives, fragrances and air fresheners), outdoor use, indoor use in close systems with minimal release (e.g. cooling liquids in refrigerators, oil-based electric heaters) and outdoor use in close systems with minimal release (e.g. hydraulic liquids in automotive suspension, lubricants in motor oil and break fluids).

Disodium Trioxosilicate is used in the following products: adhesives and sealants, textile treatment products and dyes, washing & cleaning products, biocides (e.g. disinfectants, pest control products), metal surface treatment products, non-metal-surface treatment products, pH regulators and water treatment products and cosmetics and personal care products.

Release to the environment of Disodium Trioxosilicate can occur from industrial use: in the production of articles, formulation in materials, formulation of mixtures, as processing aid and in processing aids at industrial sites.
Other release to the environment of Disodium Trioxosilicate is likely to occur from: indoor use (e.g. machine wash liquids/detergents, automotive care products, paints and coating or adhesives, fragrances and air fresheners).

Disodium Trioxosilicate can be used instead of sodium tripolyphosphate in the synthesis of efficient detergents and metal cleaning agents to reduce the pollution of sodium tripolyphosphate to the environment.
The application of Disodium Trioxosilicate in detergents has a history of more than 40 years abroad, and the application technology is relatively mature.

There are also more than 20 years of domestic application to detergents and other industries, which is a mature chemical products, but also has a mature and broad market.
Disodium Trioxosilicate has a large number of applications in detergent, ceramic, electroplating, textile, printing and dyeing, paper making, cement, concrete, refractory materials, oil and leather processing and other industrial fields.

At present, the industry order of large amount of application of Disodium Trioxosilicate is: ceramics, industrial cleaning, detergent, concrete, printing and dyeing, paper making, cement, oil mining, other.

PROPERTIES AND USES of DISODIUM TRIOXOSILICATE:
*Alkaline:
Disodium trioxosilicate is a strong alkaline substance, which can cause skin irritation and burns.

*Water-soluble:
Disodium Trioxosilicate is highly soluble in water, forming a viscous solution.

*Adhesive:
Disodium Trioxosilicate is often used as an adhesive, especially for ceramics and glass.

*Preservative:
Disodium Trioxosilicate can be used as a preservative in food and other products.

*Cleaning agent:
Disodium Trioxosilicate is used in some cleaning products due to its alkalinity and degreasing properties.

*Building material:
Disodium Trioxosilicate is used in some building materials to improve durability and fire resistance.

BENEFITS / KEY CHARACTERISTICS of DISODIUM TRIOXOSILICATE:
*High alkalinity:
Very good for applications of Disodium Trioxosilicate requiring strong base.

*Solubility in water:
Makes Disodium Trioxosilicate useful in aqueous systems, but speciation must be considered.

*Versatility:
Because of its silicate chemistry, it can form different silicate species; thus, Disodium Trioxosilicate can act in different industrial roles (cleaning, corrosion, passivation).

*Cost-effective:
Inorganic silicates like this are relatively inexpensive and effective for large-scale industrial use.

PREPARATION AND PROPERTIES of DISODIUM TRIOXOSILICATE:
The anhydrous compound can be prepared by fusing silicon dioxide SiO2 (silica, quartz) with sodium oxide Na2O in 1:1 molar ratio.
Disodium Trioxosilicate crystallizes from solution as various hydrates, such as
pentahydrate Na2SiO3·5H2O (CAS 10213-79-3, EC 229-912-9, PubChem 57652358)
nonahydrate Na2SiO3·9H2O (CAS 13517-24-3, EC 229-912-9).

STRUCTURE of DISODIUM TRIOXOSILICATE:
In the anhydrous solid, the metasilicate anion is actually polymeric, consisting of corner-shared {SiO4} tetrahedra, and not a discrete SiO32− ion.
In addition to the anhydrous form, there are hydrates with the formula Na2SiO3·nH2O (where n = 5, 6, 8, 9), which contain the discrete, approximately tetrahedral anion SiO2(OH)22− with water of hydration.

For example, the commercially available sodium silicate pentahydrate Na2SiO3·5H2O is formulated as Na2SiO2(OH)2·4H2O, and the nonahydrate Na2SiO3·9H2O is formulated as Na2SiO2(OH)2·8H2O.
The pentahydrate and nonahydrate forms have their own CAS Numbers, 10213-79-3 and 13517-24-3 respectively.

IDENTIFICATION TEST of DISODIUM TRIOXOSILICATE:
take a sample of 200mg and dissolve it in 10ml of water, drop it one drop on the color plate, add 1 drop of 4mol/L sodium hydroxide and 1 drop of solution from 0.5g ammonium molybdate dissolved in 10ml of water, plus 3ml of sulfuric acid, should appear dark yellow, to show the presence of silicate.

A nickel-chromium alloy (nichrome) wire was dipped into the sample solution in Test 1, and the flame was extended.
A bright yellow color should appear, indicating the presence of sodium.

PRODUCTION METHOD of DISODIUM TRIOXOSILICATE:
Sodium carbonate (or sodium hydroxide) was mixed with silica sand in a molar ratio of Na2O/SiO2 = 1:3, melted in a platinum crucible, and dissolved in water to form an aqueous solution of sodium silicate.
A calculated amount of sodium hydroxide was added to the solution so that the molar ratio of Na2O/SiO2 in the solution was 1:1.

The resulting solution of Na2O/SiO2 composition was heated to several tens of degrees, concentrated, and cooled to 30 ° C.
To obtain a nonahydrate, which was heated to obtain an anhydrous product.

Dry methods include soda ash method, sodium sulfate (mirabilite) method and trona method.
Soda ash method: the soda ash and silica sand are mixed evenly according to a certain proportion, and the melting reaction is carried out at 1400~1500 ℃.

The melt is quenched and cooled by water to form glass frit, which is put into the dissolution tank while it is hot, then steam is introduced for heating, and water glass is prepared by sedimentation and concentration.
The reaction scheme is as follows.

Sodium sulfate method: First sodium sulfate (Glauber's salt) and coal powder are mixed evenly, then Silica sand is added, after mixing evenly, it is quickly added to the furnace for reaction, after the reaction is completed, the product is cooled, crushed, dissolved, precipitation, concentration, preparation of water glass.

The reaction scheme is as follows.
Trona Method: Mix Trona, silica sand and pulverized coal in a certain proportion, then add the adjustment role of caustic soda slag, the mixture is preheated by the top of the furnace for 2~4H and then put into the furnace for reaction, after 3~5h, a melt is generated, and the glass frit formed by cooling is dissolved, precipitated and concentrated to obtain water glass by quenching the discharge water.

The reaction scheme is as follows.
The liquid caustic soda and silica sand are mixed into the autoclave in proper proportion by wet method, and heated by direct steam.

After the pressure in the reactor rises to 0.7-0.8MPa, the direct steam is stopped, the pressure was maintained by a jacketed steam incubation, and the reaction was carried out for several hours.

The reaction mixture was filtered and concentrated to obtain a water glass.
The reaction scheme is as follows.

The sodium hydroxide solution is added to the silica sand according to the theoretical amount, heated and stirred until dissolved, and the reaction is maintained for several hours: After the reaction is finished, filtration is performed.
After the filtrate was concentrated, the crystals were cooled to about 30 ° C., and the separated crystals were washed with ethanol and dried.

Add 13% ~ 14% sodium hydroxide solution to water glass containing 30.85% silica and 14.34% sodium oxide, stir and filter to make the filtrate completely transparent, and then add a small amount of sodium silicate nonhydrate seed crystal to the filtrate, stand still.
The crystals were filtered with suction, washed with ethanol and dried.

PHYSICAL and CHEMICAL PROPERTIES of DISODIUM TRIOXOSILICATE:
CAS: 6834-92-0
EINECS: 215-687-4
InChI: InChI=1/2Na.HO3Si/c;;1-4(2)3/h;;4H/q2*+1;-2
InChIKey: NTHWMYGWWRZVTN-UHFFFAOYSA-N
Molecular Formula: Na2O3Si
Molar Mass: 122.06 g/mol
Density: 2.4 g/cm³
Melting Point: 1089 °C
Water Solubility: Soluble in cold water, hydrolyzes in hot water, insoluble in acids, alcohol, and salt solutions

Appearance: White powder / crystals
Specific Gravity: 2.61
Color: White
Merck: 14,8642
pH: 11 (1 mM solution); 11.91 (10 mM solution); 12.62 (100 mM solution)
Stability: Hygroscopic
Sensitive: Forms stable aqueous solutions
Refractive Index: nD25 (glass) 1.520

Physical and Chemical Properties: White square crystals;
melting point 40–48 °C;
relative density 0.7–0.9;
soluble in water and dilute alkali, insoluble in alcohol and acid; aqueous solution is alkaline
Chemical Formula: Na2SiO3
Molar Mass: 122.062 g·mol⁻¹
Appearance: White crystals
Density: 2.61 g/cm³
Melting Point: 1,088 °C (1,990 °F; 1,361 K)
Solubility in Water: 22.2 g/100 mL (25 °C); 160.6 g/100 mL (80 °C)

Solubility: Insoluble in alcohol
Refractive Index (nD): 1.52
Thermochemistry:
Heat Capacity (C): 111.8 J/(K·mol)
Standard Molar Entropy (S°298): 113.71 J/(K·mol)
Standard Enthalpy of Formation (ΔfH°298): −1561.43 kJ/mol
Gibbs Free Energy (ΔfG°): −1427 kJ/mol
Physical State: Colourless or white solid / powder (anhydrous form, per ECHA)

Melting point: Very high; ~ 1,089 °C is reported for the anhydrous form.
Vapour pressure: Very low under ambient conditions, negligible; at very high temperature (1175 °C) the vapour pressure is ~1.03 Pa.
Solubility: Highly soluble in water. In aqueous solution, it dissociates into sodium ions and a variety of silicate species (monomeric, oligomeric, and polysilicate ions) depending on pH.
pH: Strongly alkaline in solution; silicates raise the pH. (From safety data: very alkaline.)
Density: According to a ChemicalBook entry for a hydrated form, density can be ~2.61 g/cm³ for certain crystalline forms.
Stability / speciation: In water, disodium metasilicate undergoes speciation: it doesn’t stay as a simple SiO₃²– ion, but forms silicate chains, rings, and other structures depending on conditions (pH, concentration).

FIRST AID MEASURES of DISODIUM TRIOXOSILICATE:
-Description of first-aid measures
*General advice:
Show this material safety data sheet to the doctor in attendance.
*If inhaled:
After inhalation:
Fresh air.
*In case of skin contact:
Take off immediately all contaminated clothing.
Rinse skin with
water/ shower.
*In case of eye contact:
After eye contact:
Rinse out with plenty of water.
Call in ophthalmologist.
Remove contact lenses.
*If swallowed:
After swallowing:
Immediately make victim drink water (two glasses at most).
Consult a physician.
-Indication of any immediate medical attention and special treatment needed.
No data available

ACCIDENTAL RELEASE MEASURES of DISODIUM TRIOXOSILICATE:
-Environmental precautions:
Do not let product enter drains.
-Methods and materials for containment and cleaning up:
Cover drains.
Collect, bind, and pump off spills.
Observe possible material restrictions.
Take up dry.
Dispose of properly.
Clean up affected area.

FIRE FIGHTING MEASURES of DISODIUM TRIOXOSILICATE:
-Extinguishing media:
*Suitable extinguishing media:
Carbon dioxide (CO2)
Foam
Dry powder
*Unsuitable extinguishing media:
For this substance/mixture no limitations of extinguishing agents are given.
-Further information:
Prevent fire extinguishing water from contaminating surface water or the ground water system.

EXPOSURE CONTROLS/PERSONAL PROTECTION of DISODIUM TRIOXOSILICATE:
-Control parameters:
--Ingredients with workplace control parameters:
-Exposure controls:
--Personal protective equipment:
*Eye/face protection:
Use equipment for eye protection.
Safety glasses
*Body Protection:
protective clothing
*Respiratory protection:
Recommended Filter type: Filter A
-Control of environmental exposure:
Do not let product enter drains.

HANDLING and STORAGE of DISODIUM TRIOXOSILICATE:
-Conditions for safe storage, including any incompatibilities:
*Storage conditions:
Tightly closed.
Dry.

STABILITY and REACTIVITY of DISODIUM TRIOXOSILICATE:
-Chemical stability:
The product is chemically stable under standard ambient conditions (room temperature).
-Possibility of hazardous reactions:
No data available