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FORMALDEHYDE SODIUM SULFOXYLATE (RONGALIT C )

FORMALDEHYDE SODIUM SULFOXYLATE (RONGALIT C )
CAS number: 149-44-0
SYNONYMS : Hydroxymethanesulfinic acid monosodium salt dihydrate;Monosodium hydroxymethanesulfinat;Sodium formaldehydesulfoxylate dihydrate;Formaldehyde sodium sulfoxylate dihydrate;NCGC00166400-01;Monosodium hydroxymethanesulfinate dihydrate;DSSTox_CID_28956;DSSTox_RID_83221;DSSTox_GSID_49030;CHEMBL3188745;DTXSID4049030;CTK5E6623;Tox21_113558;Sodium Formaldehyde Sulfoxylate [USAN];LS-90059;Methanesulfinic acid,hydroxy- (8CI,9CI);CAS-6035-47-8;Sodium formaldehyde sulfoxylate;149-44-0 [RN];05-739-4 [EINECS];Formaldehydesulfoxylic acid sodium salt;Hydroxyméthanesulfinate de sodium [French] [ACD/IUPAC Name];Hydroxymethanesulfinic acid sodium salt;Methanesulfinic acid, 1-hydroxy-, sodium salt (1:1) [ACD/Index Name];MONOSODIUM HYDROXYMETHANESULFINATE;Natriumhydroxymethansulfinat [German] [ACD/IUPAC Name];Oxymethansulfinsaeuren natrium [German];Rongalit [Trade name];Sodium (hydroxymethyl)sulfinate;sodium formaldehyde sulphoxylate;Sodium formaldehydesulfoxylate;Sodium hydroxymethanesulfinate [ACD/IUPAC Name];sodium hydroxymethanesulfinate (1:1);Sodium hydroxymethanesulphinate;Sodium hydroxymethanesulphonate;sodium oxymethylene sulfoxylate;UNII-X4ZGP7K714;X4ZGP7K714;Aldanil;Bleachit D;C.I. Reducing Agent 2;Discolite;Formaldehyde sodium sulfoxylate;formaldehyde sodium sulphoxylate;Formapon;Formopan;Hydrolit;Hydroxymethanesulfinic acid monosodium salt;Hydroxymethansulfinsaeure, natriumsalz;Leptacid;Leptacit;Methanesulfinic acid, hydroxy-, monosodium salt;MFCD00040426;MFCD00150599 [MDL number];Natrium formaldehydesulfoxylat;Natrium hydroxymethansulfinat;Redol C;Rodite;Rongalit C;Rongalite C;Sodium methanalsulfoxylate;Sodium oxymethanesulfinic acid;Superlite C;UNII:X4ZGP7K714
[6035-47-8], dihydrateSodium hydroxymethanesulfinate;Rongalite;149-44-0;Rongalit;Sodium formaldehyde sulfoxylate;Aldanil;Discolite;Formapon;Formopan;Hydrolit;Leptacid;Leptacit;Rodite;Rongalite C;Superlite C;Bleachit D;Rongalit C;Sodium hydroxymethanesulphinate;Hydrosulfite AWC;Redol C;Methanesulfinic acid, hydroxy-, monosodium salt;Formaldehyde sodium sulfoxylate;Hydroxymethanesulfinic acid sodium salt;Sodium methanalsulfoxylate;Sodium Sulfoxylate Formaldehyde (anhydrous);Natrium hydroxymethansulfinat;SODIUM FORMALDEHYDESULFOXYLSodium hydroxymethanesulfinate;Rongalite;149-44-0;Rongalit;Sodium formaldehyde sulfoxylate;Aldanil;Discolite;Formapon;Formopan;Hydrolit;Leptacid;Leptacit;Rodite;Rongalite C;Superlite C;Bleachit D;Rongalit C;Sodium hydroxymethanesulphinate;Hydrosulfite AWC;Redol C;Methanesulfinic acid, hydroxy-, monosodium salt;Formaldehyde sodium sulfoxylate;Hydroxymethanesulfinic acid sodium salt;Sodium methanalsulfoxylate;Sodium Sulfoxylate Formaldehyde (anhydrous);Natrium hydroxymethansulfinat;SODIUM FORMALDEHYDESULFOXYL
Molecular formula: CH3NaO3S
Molar mass: 118,10 g / mol 154.14 g / mol, dihydrate
Appearance: colorless crystals
Density: 1.75 g / cm3, dihydrate
Melting point: 64.5 ° C, dihydrate
Solubility in water: 600 g / L, dihydrate (approx.)
Acidity (pKa): Decay. low pH
Structure: Molecular shape

FORMALDEHYDE SODIUM SULFOXYLATE (RONGALIT C )
CAS number: 149-44-0
SYNONYMS : Hydroxymethanesulfinic acid monosodium salt dihydrate;Monosodium hydroxymethanesulfinat;Sodium formaldehydesulfoxylate dihydrate;Formaldehyde sodium sulfoxylate dihydrate;NCGC00166400-01;Monosodium hydroxymethanesulfinate dihydrate;DSSTox_CID_28956;DSSTox_RID_83221;DSSTox_GSID_49030;CHEMBL3188745;DTXSID4049030;CTK5E6623;Tox21_113558;Sodium Formaldehyde Sulfoxylate [USAN];LS-90059;Methanesulfinic acid,hydroxy- (8CI,9CI);CAS-6035-47-8;Sodium formaldehyde sulfoxylate;149-44-0 [RN];05-739-4 [EINECS];Formaldehydesulfoxylic acid sodium salt;Hydroxyméthanesulfinate de sodium [French] [ACD/IUPAC Name];Hydroxymethanesulfinic acid sodium salt;Methanesulfinic acid, 1-hydroxy-, sodium salt (1:1) [ACD/Index Name];MONOSODIUM HYDROXYMETHANESULFINATE;Natriumhydroxymethansulfinat [German] [ACD/IUPAC Name];Oxymethansulfinsaeuren natrium [German];Rongalit [Trade name];Sodium (hydroxymethyl)sulfinate;sodium formaldehyde sulphoxylate;Sodium formaldehydesulfoxylate;Sodium hydroxymethanesulfinate [ACD/IUPAC Name];sodium hydroxymethanesulfinate (1:1);Sodium hydroxymethanesulphinate;Sodium hydroxymethanesulphonate;sodium oxymethylene sulfoxylate;UNII-X4ZGP7K714;X4ZGP7K714;Aldanil;Bleachit D;C.I. Reducing Agent 2;Discolite;Formaldehyde sodium sulfoxylate;formaldehyde sodium sulphoxylate;Formapon;Formopan;Hydrolit;Hydroxymethanesulfinic acid monosodium salt;Hydroxymethansulfinsaeure, natriumsalz;Leptacid;Leptacit;Methanesulfinic acid, hydroxy-, monosodium salt;MFCD00040426;MFCD00150599 [MDL number];Natrium formaldehydesulfoxylat;Natrium hydroxymethansulfinat;Redol C;Rodite;Rongalit C;Rongalite C;Sodium methanalsulfoxylate;Sodium oxymethanesulfinic acid;Superlite C;UNII:X4ZGP7K714
[6035-47-8], dihydrateSodium hydroxymethanesulfinate;Rongalite;149-44-0;Rongalit;Sodium formaldehyde sulfoxylate;Aldanil;Discolite;Formapon;Formopan;Hydrolit;Leptacid;Leptacit;Rodite;Rongalite C;Superlite C;Bleachit D;Rongalit C;Sodium hydroxymethanesulphinate;Hydrosulfite AWC;Redol C;Methanesulfinic acid, hydroxy-, monosodium salt;Formaldehyde sodium sulfoxylate;Hydroxymethanesulfinic acid sodium salt;Sodium methanalsulfoxylate;Sodium Sulfoxylate Formaldehyde (anhydrous);Natrium hydroxymethansulfinat;SODIUM FORMALDEHYDESULFOXYLSodium hydroxymethanesulfinate;Rongalite;149-44-0;Rongalit;Sodium formaldehyde sulfoxylate;Aldanil;Discolite;Formapon;Formopan;Hydrolit;Leptacid;Leptacit;Rodite;Rongalite C;Superlite C;Bleachit D;Rongalit C;Sodium hydroxymethanesulphinate;Hydrosulfite AWC;Redol C;Methanesulfinic acid, hydroxy-, monosodium salt;Formaldehyde sodium sulfoxylate;Hydroxymethanesulfinic acid sodium salt;Sodium methanalsulfoxylate;Sodium Sulfoxylate Formaldehyde (anhydrous);Natrium hydroxymethansulfinat;SODIUM FORMALDEHYDESULFOXYL
Molecular formula: CH3NaO3S
Molar mass: 118,10 g / mol 154.14 g / mol, dihydrate
Appearance: colorless crystals
Density: 1.75 g / cm3, dihydrate
Melting point: 64.5 ° C, dihydrate
Solubility in water: 600 g / L, dihydrate (approx.)
Acidity (pKa): Decay. low pH
Structure: Molecular shape
Rongalite is a chemical compound with the molecular formula Na+HOCH2SO2−. This salt has many additional names, including Rongalit, sodium hydroxymethylsulfinate, sodium formaldehyde sulfoxylate, and Bruggolite. It is listed in the European Cosmetics Directive as sodium oxymethylene sulfoxylate (INCI). It is water-soluble and generally sold as the dihydrate. The compound and its derivatives are widely used in the dye industry.[1]
Although available commercially, the salt can be prepared from sodium dithionite and formaldehyde:
Na2S2O4 + 2 CH2O + H2O → HO-CH2-SO3Na + HO-CH2-SO2Na
This reaction proceeds quantitatively, such that dithionite can be determined by its conversion to Rongalite, which is far less O2-sensitive and thus easier to handle.
The hydroxymethanesulfinate ion is unstable in solution towards decomposition to formaldehyde and sulfite. Addition of at least one equivalent of formaldehyde pushes the equilibrium towards the side of the adduct and reacts further to give the bis-(hydroxymethyl)sulfone. Such solutions are shelf-stable indefinitely.
Sodium hydroxymethanesulfinate was originally developed in the early 20th century for the textile industry as a shelf-stable source of sulfoxylate ion, where the latter can be generated at will. In use, when sodium hydroxymethanesulfinate is made acidic, the reducing sulfoxylate ion and formaldehyde are released in equimolar amounts. For safety reasons the generation of formaldehyde must be taken into consideration when used industrially.
NaHOCH2SO2 can essentially be considered to be a source of SO22−. As such it is used both as a reducing agent and as a reagent to introduce SO2 groups into organic molecules. Treatment of elemental Se and Te with NaHOCH2SO2 gives solutions containing the corresponding Na2Sex and Na2Tex, where x is approximately 2. As a nucleophile, NaHOCH2SO2 reacts with alkylating agents to give sulfones.
HO-CH2-SO2Na + 2 C6H5CH2Br → [C6H5CH2]2SO2 + NaBr + CH2O + HBr
Occasionally, alkylation will occur also at oxygen, thus α,α'-dibromoxylene gives both the sulfone and the isomeric sulfinate ester.
The original use of the compound was as industrial bleaching agent and as a reducing agent for vat dyeing.[1] Another large-scale use is as a reducing agent in redox-initiator systems for emulsion polymerization. One of the typical redox pair examples is t-butyl peroxide. A niche use is its use as water conditioner for aquaria as it rapidly reduces chlorine and chloramine and reacts with ammonia to form the innocuous aminomethylsulfinate ion.[2] It is also used as an antioxidant in pharmaceutical formulation.
The compound has been used increasingly in commercial cosmetic hair dye colour removers despite the generation of formaldehyde, a known human carcinogen.
It has a variety of specialized applications in organic synthesis.[3][4]
The zinc complex Zn(HOCH2SO2)2 is marketed under the trademarks Decroline, Decolin, and Safolin. This compound is an additive in polymers and textiles.[5]
Sodium hydroxymethanesulfinate is called Rongalite C. Calcium hydroxymethanesulfinate is called Rongalite H.
Rongalite is a reducing salt with various names such as sodium hydroxymethylsulfinate, sodium formaldehyde sulfoxylate and Bruggolite, with the molecular formula Na + HOCH2SO2−. Rongalit word meaning means decolorizing.
Rongalit is described as sodium oxymethylene sulfoxylate (INCI) in the European Cosmetic Directive. It is well soluble in water and is mostly sold commercially in dihydrate form.
This compound and its derivatives are frequently used in the paint industry.
The main use of Rongalit C is: its use as an industrial bleach and a reducing agent for boiler dyeing. It is used in the field of boiler dyeing and bleaching on the textile face.
The second main use is also: as a reductant in redox systems for emulsion polymerization. One of the most common examples of redox pairs is t-butyl peroxide.
Also, another use of Rongalit C is as a water conditioner in aquariums, as it rapidly lowers chlorine and chloramine and reacts with ammonia to form the harmless aminomethylsulfinate ion.
It also acts as an antioxidant in pharmaceutical formulations.
In addition, Rongalit C has become more and more used commercially in cosmetic hair dye color removers, despite obtaining formaldehyde, which is a well-known carcinogen.
It is used as a special reagent in synthesis in organic chemistry.
It is used as pan poison in heavy metals (Hg, Au, Cu, Ba, Sb, Pb, Bi).
Sodium Formaldehyde Sulfoxylate production is outlined below on a small scale. This production is very similar to the commercial industrial production process, but at a micro level.
In the production process, it has been determined that a very different reaction occurs by acting on 1 mol of Hydrosulfite with the presence of 1 Mol of Formaldehyde and Sodium Hydroxide.
Exothermic reaction occurs if 1 mol of Sodium Hydrosulfite Solution, 1 mol of Sodium Hydroxide solution and 1 mol of formaldehyde solution are shaken. In the production of Rongalit C, the reduction potential of the solution disappears after a while compared to the indigo carmine solution in cold.
If the solution is mixed with an equal volume of alcohol in the ongoing process, the neutral sodium hydrosulfite will precipitate. When this solution is evaporated, a chemical in the form of a syrup is formed.
In this process, it was recrystallized from hot ethanol as well as water, from which it dissolved too much. Sodium Formaldehyde Sulfoxylate is the first to form prismatic crystals at this stage. Later, large silvery leaves are formed. The chemical formed here forms the formula NaSCO3H3 • 2H2O.
Sodium Formaldehyde Sulfoxylate (Rongalit C) production reaction is as follows;
CH2O + Na2S2O4 + NaOH》 NaSCO3H3 + Na2SO3.
May cause skin irritation. It also has chemical effects that can cause serious eye irritation. May cause respiratory irritation.
One of the major effects of Rongalit C is thought to cause genetic defects.
protective gloves should be used while working. Inhaling its fumes should be avoided.
In case of contact with hands and face, it should be washed with water for 1 few minutes.
It should be stored in a cool and dry place.
Sodium Formaldehyde Sulfoxylate is stored in 25 Kg packages.
It should be stored in areas not directly exposed to the sun and away from the sun.
Sodium Formaldehyde Sulfoxylate (Rongalit C) has functional properties as a catalyst, Emulsifier, Raw Material and Reducing Agent.
It is actively used in the pharmaceutical, textile, rubber, plastic and adhesive industries.
Rongalit C is used as a polymerization regulator as a catalyst while manufacturing in the plastics industry.
It is used as a redox activator in rubber manufacturing.
It is used as a reducing agent for redox-catalyzed polymerization. So it is also a reducing substance.
It is used as a paint raw material in paint manufacturing.
Sodium formaldehyde sulfoxylate is used as a stripping and release agent in the textile industry.
It is used as a reducing agent in VAT dyeing works.
Rongalit C is used as bleaching agent in soap and molasses production.
It is used as an antioxidant substance in some pharmaceutical drug manufacturing.
It is used as an active ingredient in drugs used in the treatment of mercury poisoning.
Rongalit C is used in the manufacture of adhesive products for packaging used in the food industry.
It is used due to its catalyst effect in the polymerization process in paper cardboard manufacturing in contact with aqueous fatty foods.
It is used in the manufacture of sealing gaskets for food containers.
It is used in the manufacture of rubber products that come into contact with food for repeated use.
Sodium formaldehyde sulfoxylate is used as an emulsifying agent in the manufacture of food contact products.
Sodium Formaldehyde Sulfoxylate (Rongalit C) prices change in parallel with the prices of the chemicals used in its production.
As the price of formaldehyde, sodium hydroxide and sodium hydrosulfite increases, the price of Rongalit C also increases.
It has an increasing trend for a long time with the development of the industry.
The price of Sodium Formaldehyde Sulfoxylate (Rongalit C) increases as the usage areas increase.
The invention discloses a production method of sodium formaldehyde sulfoxylate. In the production method, anhydrous sodium sulfite is firstly added in the concentration process of a prepared sodium formaldehyde sulfoxylate solution; and a sodium hydroxide solution or a soda ash solution is added before the prepared sodium formaldehyde sulfoxylate solution is concentrated. The advantage is to provide a production method of odorless anhydrous sodium sulfite, thus the odor of free formaldehyde in products is eliminated, the odor generated because products are affected with damp and decomposed is eliminated, and moisture absorption, caking and decomposition of products are prevented, so that the storage stationary phase of the products is long and can be stored for a year under a closed state but not caked and stunk, and the product quality is improved; 35% of aqueous solution is transparent after the product is dissolved; and the production method is environment-friendly and clean, and is suitable for production of platy, blocky, powdered, granular and crushed sodium formaldehyde sulfoxylate products.
Reactivity: Not inherently chemically reactive. Reacts vigorously with acids and oxidizers.
Stability: Stable under recommended storage and handling conditions.
Possibility of hazardous reactions: Reacts with acids to release toxic gases like sulfur dioxide, hydrogen sulfide, formaldehyde. Reacts violently with Oxidizing agent.
Material to avoid / Incompatible material: Acids, oxidizing agents, low flash point material.
Condition to avoid: Avoid humidity, Keep away from heat.
Hazardous decomposition products: Sulfur dioxide (SO2), Formaldehyde (HCHO)Eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
Skin:Get medical aid if irritation develops or persists. Flush skin with plenty of soap and water.
Ingestion:Get medical aid. Wash mouth out with water.
Inhalation:Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid if cough or other symptoms appear.
General Information:As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear.
Extinguishing Media:Use water spray, dry chemical, carbon dioxide, or chemical foam.
General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:Vacuum or sweep up material and place into a suitable disposal container.
Handling:Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes. Use only in a chemical fume hood.
Storage:Store in a cool, dry place. Store in a tightly closed container.
Engineering Controls:Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower.
Exposure Limits CAS# 149-44-0: Personal Protective Equipment Eyes: Wear chemical splash goggles.
Skin:Wear appropriate protective gloves to prevent skin exposure.
Clothing:Wear a chemical apron.
Respirators:A NIOSH/MSHA approved air purifying dust or mist respirator or European Standard EN 149.
Products which are considered hazardous for supply are classified as Special Waste and the disposal of such chemicals is covered by regulations which may vary according to location. Contact a specialist disposal company or the local waste regulator for advice. Empty containers must be decontaminated before returning for recycling.

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