Sodium bisulfite
- CAS No.
- 7631-90-5
- Chemical Name:
- Sodium bisulfite
- Synonyms
- NAHSO3;SODIUM METABISULPHITE;SODIUM DISULFITE;SODIUM BISULPHITE;SODIUM HYDROGEN SULFITE;BISULFITE;SODIUM BISULFITE SOLUTION;Sodium acid;SODIUM HYDROGEN SULPHITE;Natriumdisulfit
- CBNumber:
- CB5854257
- Molecular Formula:
- HNaO3S
- Molecular Weight:
- 104.06
- MDL Number:
- MFCD00003530
- MOL File:
- 7631-90-5.mol
| Melting point | 150 °C |
|---|---|
| Density | 1.48 |
| storage temp. | Store at RT. |
| solubility | 300 g/L |
| form | Powder/Solid |
| Specific Gravity | 1.48 |
| color | White |
| Odor | Slight odor of sulfur dioxide |
| Water Solubility | 300 g/L |
| Merck | 13,8660 |
| Stability | Stable. Incompatible with strong oxidizing agents, strong acids. |
| InChIKey | DWAQJAXMDSEUJJ-UHFFFAOYSA-M |
| FDA 21 CFR | 182.3739; 582.3739; 161.173 |
| Substances Added to Food (formerly EAFUS) | SODIUM BISULFITE |
| SCOGS (Select Committee on GRAS Substances) | Sodium bisulfite |
| CAS DataBase Reference | 7631-90-5(CAS DataBase Reference) |
| EWG's Food Scores | 2-3 |
| FDA UNII | TZX5469Z6I |
| EPA Substance Registry System | Sodium bisulfite (7631-90-5) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H302 | |||||||||
| Precautionary statements | P264-P270-P301+P312-P501 | |||||||||
| Hazard Codes | Xn | |||||||||
| Risk Statements | 22-31-41-52 | |||||||||
| Safety Statements | 26-39-46-25 | |||||||||
| RIDADR | UN 2693 | |||||||||
| OEB | B | |||||||||
| OEL | TWA: 5 mg/m3 | |||||||||
| WGK Germany | 1 | |||||||||
| RTECS | UX8225000 | |||||||||
| PackingGroup | III | |||||||||
| HS Code | 28321000 | |||||||||
| Toxicity | LD50 i.v. in rats: 115 mg/kg (Hoppe, Goble) | |||||||||
| NFPA 704 |
|
Sodium bisulfite price More Price(34)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 8.06356 | Sodium hydrogen sulfite (39% solution in water) for synthesis | 7631-90-5 | 1L | $38 | 2024-03-01 | Buy |
| Sigma-Aldrich | 8.06356 | Sodium hydrogen sulfite (39% solution in water) for synthesis | 7631-90-5 | 2.5L | $63.1 | 2024-03-01 | Buy |
| Sigma-Aldrich | 8.06356 | Sodium hydrogen sulfite (39% solution in water) for synthesis | 7631-90-5 | 25L | $399 | 2024-03-01 | Buy |
| Sigma-Aldrich | 13438 | Sodium bisulfite solution purum, ~40% | 7631-90-5 | 1L | $56.5 | 2024-03-01 | Buy |
| Sigma-Aldrich | 13438 | Sodium bisulfite solution purum, ~40% | 7631-90-5 | 2.5L | $116 | 2024-03-01 | Buy |
Sodium bisulfite Chemical Properties,Uses,Production
Chemical properties
white monoclinic crystal; sulfur dioxide odor; soluble in water, slightly soluble in alcohol.
Uses
1. Used as reducing agent, food preservatives and bleach.
2. Used for the bleaching of cotton fabric and organic substance. Used as reducing agents in dyes, paper, leather, chemical synthesis and other industries. Used for the production of analgin and aminopyrine intermediates in pharmaceutical industry. Used as bleach, preservatives, and antioxidants of food grade products.
3. Sodium bisulfite is reduction bleach allowed to use in China. It has bleaching effect on food and has a strong inhibitory effect on the oxidase within plant foods. It can be used for candied fruit, glucose, sugar, rock candy, caramel, candy, liquid glucose, dried fruit, dried vegetables, vermicelli, bamboo shoots, mushrooms and mushroom cans in provisions of our country, with a maximum use of 0.45g/kg; it can also be used for potato starch with a maximum use amount of 0.2g/kg and a maximume residual amount (in terms of SO2) of less than 0.03 g/kg.
4. Used as reductants in analysis and also as bleach and bacterial inhibitors
5. Used as reducing agent, antiseptic, disinfectant and bleach.
Identification test
Both sodium salt test (IT-28) and sulfite test (IT-30) are positive.
Content Analysis
Transfer 50ml of 0.1mol/L iodine solution into a flask with a stopper, and then add 200mg of accurately weighed sample and plug. After placed 5min, add 1ml of hydrochloric acid, and plus starch test solution (TS-235) as an indicator. Titrate the excess iodine with 0.1 mol/L sodium thiosulfate. Each mI of 0.1mol/L iodine solution is equivalent to 3.203mg of sulfur dioxide (SO2).
Toxicity
ADI 0~0.7mg/kg (in SO2; including SO2 and sulfites; FAO/WHO, 2001).
LD50 115 mg/k (rat, oral).
GRAS (FDA, § 182.3739, 2000).
Usage limits
GB 2760-2001 (g/kg): candied fruit, dried fruits, dried vegetables, vermicelli, glucose, sugar, rock candy, caramel, candy, liquid glucose and cans of bamboo shoots, mushrooms and mushrooms 0.45; potato starch 0.20 (Residue≤0.03); fresh glucose (tablet gasification process, in sulfite) 2.4 (residual amount calculated in SO2≤0.05, tablet packaging shall give clear indication of indicate edible)
FAO/WHO(1984): frozen shrimp, prawns, lobsters (raw product) 100mg/kg, (cooked products) 30mg/kg(in SO2); frozen french fried potatoes 50mg/kg (in SO2); pineapple juice with anti-corrosion 500 mg/kg of (in SO2; only for manufacture).
Maximum residue levels (in SO2) of Japanese provisions: dried apricots, dried peaches 2g/kg; gelatin 0.5g/kg; molasses, corn syrup 0.3g/kg; fruit wine 0.35g/kg; shrimp 0.1mg/kg.
When applied to dry fruit, sodium bisulfite can be prepared into 0.2% to 3% solution to take dipping or spraying.
FDA, § 182.3739 (2000): shall not be used for meat, vitamin B and source food.
EEC (1990): mainly for the preservation of alcoholic beverages.
Production method
Add sodium sulphite mother liquor (containing NaHSO3 40%, Ph value of 3 to 4) slowly into soda ash to generate sodium sulfite solution (to the slurry Ph value of 7~8 for the end); transfer the above sodium sulfite solution into series reactors (2 to 3) to absorb the SO2 gas (10% to 13%) from the combustion of sulfur, forming sodium bisulfite (to the reaction temperature no longer rising for the end). In the reaction process, a large number of crystals precipitate out, which is centrifuged to obtain the wet goods with moisture content of 6% to 10%, and then dehydrated by air drying at 250 to 300 ° C to make the final products.
2NaHSO3 + Na2CO3 → 2Na2SO3 + H2O + CO2↑
NaSO3+H2O→2NaHSO3
Absorb sulfur dioxide from the gas of sulfuric acid production with soda ash solution to generate sodium bisulfite. After further centrifugal separation and air drying at 250~300 ° C, the final sodium bisulfite is obtained.
Na2CO3 + 2SO2 + H2O → 2NaHSO3 + CO2↑
Hazards & Safety Information
Category： Corrosive items
Toxicity classification： moderate toxicity
Acute Toxicity： Oral-Rat LD50: 2000 mg/kg; Abdominal-Mouse LD50: 675 mg/kg
Flammable hazardous characteristics ：
The products can decompose into sulfur oxides when meeting heat;
Aqueous solution is alkaline and corrosive.
Storage and transportation characteristics ：
Storehouse should be low-temperature, well-ventilated and dry.
Fire extinguishing agent： much water
Occupational Standard： TWA 5mg /m3; TWA 5 mg/m3
Chemical Properties
white powder
Chemical Properties
Sodium bisulfite is a white crystalline solid. Slight odor of sulfur dioxide and a disagreeable taste. Slowly oxidized to the sulfate on exposure to air
Uses
Reducing agent; convenient source of sulfur dioxide.
Uses
Sodium Bisulfite is a preservative that exists as a powder, with a solubility of 1 g in 4 ml of water. it prevents discoloration and inhib- its bacterial growth. it is used in dried fruit to inhibit browning and maintain the bright color. it is found in reconstituted lemon juice. see sulfur dioxide.
Uses
sodium bisulfite is a preservative and anti-oxidant, it is most frequently used as a pH adjuster.
Uses
As disinfectant and bleach, particularly for wool; in dyeing for preparing hot and cold indigo vats; in paper-making in place of sodium hyposulfite to remove Cl from bleached fibers; as stripper (reducer) in laundering; to remove permanganate stains from skin and clothing; to render certain dyes sol; manufacture of sodium hydrosulfite; coagulating rubber latex; as preservative for deteriorative liqs or solutions used for technical purposes; as antiseptic in fermentation industries. As preservative and bleach in food. Pharmaceutic aid (antioxidant).
Definition
ChEBI: Sodium hydrogensulfite is an inorganic sodium salt having hydrogensulfite as the counterion. It has a role as a mutagen and an allergen. It is an inorganic sodium salt and a sulfite salt. It contains a hydrogensulfite.
General Description
Also known as sodium acid sulfite or sodium hydrogen sulfite, NaHS03 is white crystals or crystalline powder that has a slight sulfurous odor and taste.Specific gravity 1.48. Strong irritant to skin and tissue. It is soluble in water,insoluble in alcohol,unstable in air,and non-combustible. Derived by saturating sodium carbonate solution with sulfur dioxide and the solution crystallized. Used as a chemical(sodium salts, cream of tartar), in vat dye preparation, textiles (antichlor, mordant, discharge), food preservative, bleaching groundwood, wool,etc., reducing agent, fermentation, antiseptic, cask sterilization (brewing), copper and brass plating,color preservative for pale crepe rubber, wood pulp digestion, analytical reagent,and as a dietary supplement.
Air & Water Reactions
Water soluble.
Reactivity Profile
Sodium bisulfite is a reducing agent. Emits highly toxic gaseous sulfur dioxide gas when heated to decomposition or on contact with mineral acids [Sax, 9th ed., 1996, p. 2949].
Hazard
Not permitted in meats and other sources of vitamin B 1 , strong irritant to skin and tissue.
Health Hazard
Powder is irritating to eyes, nose, and throat and can irritate skin. Ingestion may cause irritation of stomach. Very large doses cause violent colic, diarrhea, depression, and death.
Fire Hazard
Flammable/combustible material. May ignite on contact with moist air or moisture. May burn rapidly with flare-burning effect. Some react vigorously or explosively on contact with water. Some may decompose explosively when heated or involved in a fire. May re-ignite after fire is extinguished. Runoff may create fire or explosion hazard. Containers may explode when heated.
Contact allergens
Sodium bisulfite is mainly used as an antioxidant in pharmaceutical products, as a disinfectant or bleach, and in the dye industry. The bisulfite of commerce consists chiefly of metabisulfite and possesses the same properties as the true bisulfite. So, the allergen to be tested in products containing disulfite is the corresponding metabisulfite.
Safety Profile
Poison by intravenous and intraperitoneal routes. Moderately toxic by ingestion. A corrosive irritant to skin, eyes, and mucous membranes. Mutation data reported. An allergen. When heated to decomposition it emits toxic fumes of SO, and Na2O. See also SULFUROUS ACID and SULFITES
Potential Exposure
Sodium bisulfite is used in the digestion of wood pulp, in the tanning of leather; in the dyeing of textiles; as a photographic reducing agent; as a food preservative; as an additive in electroplating; as disinfectant, bleach, antioxidant, and as inhibitor of yeast and bacteria in winemaking.
Shipping
UN2693 Bisulfites, inorganic, aqueous solutions, n.o.s., Hazard class: 8; Labels: 8-Corrosive material. UN3260 Bisulfites, inorganic, solid, n.o.s., Hazard class: 8; Labels: 8-Corrosive material.
Purification Methods
Crystallise it from hot H2O (1mL/g). Dry it at 100o under vacuum for 4hours.
Incompatibilities
Aqueous solution is a weak acid. Incompatible with strong mineral acids forming a toxic sulfur dioxide gas. A strong reducing agent, sodium bisulfite is incompatible with oxidizers, such as perchlorates, peroxides, permanganates, chlorates, and nitrates. Reacts with bases forming sulfate. Slowly oxidizes to sulfate in air. Heat causes decomposition. Slowly oxidized to the sulfate on exposure to air. Contact with oxidizers or acids forms sulfur dioxide gas. Attacks some metals in the presence of moisture.
Waste Disposal
Dump into water, add soda ash, then neutralize with HCl; flush to sewer with large volumes of water.
Sodium bisulfite Preparation Products And Raw materials
Raw materials
1of2
Preparation Products
1of8
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Hebei Mojin Biotechnology Co., Ltd | +86 13288715578 +8613288715578 | sales@hbmojin.com | China | 12840 | 58 |
| Hebei Yanxi Chemical Co., Ltd. | +8617531190177 | peter@yan-xi.com | China | 5857 | 58 |
| Hebei Chuanghai Biotechnology Co,.LTD | +86-13131129325 | sales1@chuanghaibio.com | China | 5893 | 58 |
| Yujiang Chemical (Shandong) Co.,Ltd. | +86-17736087130 +86-18633844644 | catherine@yjchem.com.cn | China | 985 | 58 |
| Capot Chemical Co.,Ltd. | +86-（0）57185586718 +86-13336195806 | sales@capot.com | China | 29791 | 60 |
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 | info@tianfuchem.com | China | 21634 | 55 |
| Hefei TNJ Chemical Industry Co.,Ltd. | +86-0551-65418679 +8618949832763 | info@tnjchem.com | China | 2986 | 55 |
| Shanxi Naipu Import and Export Co.,Ltd | +86-13734021967 +8613734021967 | kaia@neputrading.com | China | 1001 | 58 |
| career henan chemical co | +86-0371-86658258 +8613203830695 | sales@coreychem.com | China | 29884 | 58 |
| SHANDONG ZHI SHANG CHEMICAL CO.LTD | +86 18953170293 | sales@sdzschem.com | China | 2930 | 58 |
View Lastest Price from Sodium bisulfite manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2024-11-07 | Sodium bisulfite
7631-90-5
|
US $0.00-0.00 / kg | 1kg | 99% | 1000000 | Hebei Jingbo New Material Technology Co., Ltd | |
 |
2024-10-25 | Sodium bisulfite
7631-90-5
|
US $70.00-20.00 / kg | 1kg | 0.99 | 20 tons | Hebei Yanxi Chemical Co., Ltd. | |
 |
2024-10-24 | Sodium bisulfite
7631-90-5
|
US $2321.00-2310.00 / Tons | 1Tons | 99.99% | 100Tons | Hebei Dangtong Import and export Co LTD |
-
- Sodium bisulfite
7631-90-5
- US $0.00-0.00 / kg
- 99%
- Hebei Jingbo New Material Technology Co., Ltd
-
- Sodium bisulfite
7631-90-5
- US $70.00-20.00 / kg
- 0.99
- Hebei Yanxi Chemical Co., Ltd.
-
- Sodium bisulfite
7631-90-5
- US $2321.00-2310.00 / Tons
- 99.99%
- Hebei Dangtong Import and export Co LTD