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Sodium bisulfite
Cas No: 7631-90-5
No Data 1 Kilogram 500 Metric Ton/Month Shijiazhuang Fanrui Logistics Co., Ltd. Contact Supplier
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USD $ 3.0-3.0 / Kilogram 1 Kilogram 1-100 Metric Ton/Month Hangzhou Dayangchem Co., Ltd. Contact Supplier
Sodium Hydrogen Sulfite
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USD $ 370.0-390.0 / Metric Ton 25 Metric Ton 10 Metric Ton/Month Hebei yanxi chemical co.,LTD. Contact Supplier
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No Data 1 Kilogram 100 Metric Ton/Month Simagchem Corporation Contact Supplier
Sodium bisulfite Food grade industry grade
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USD $ 1.0-1.0 / Metric Ton 1 Metric Ton 1000 Metric Ton/Day Scale Chemical Corporation Contact Supplier
Sodium bisulfite
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No Data No Data 1000 Metric Ton/Month Crovell Biotech (Hebei) Co., Ltd. Contact Supplier
TIANFU-CHEM CAS:7631-90-5 Sodium bisulfite
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No Data 1 Gram 1 Metric Ton/Day Henan Tianfu Chemical Co., Ltd. Contact Supplier
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7631-90-5 Usage

Purification Methods

Crystallise it from hot H2O (1mL/g). Dry it at 100o under vacuum for 4hours.

Chemical Properties

white powder

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.

Identification test

Both sodium salt test (IT-28) and sulfite test (IT-30) are positive.

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).

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).

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.

Air & Water Reactions

Water soluble.

Uses

Reducing agent; convenient source of sulfur dioxide.

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.

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.

Chemical properties

white monoclinic crystal; sulfur dioxide odor; soluble in water, slightly soluble in alcohol.

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).

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↑

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.

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].

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

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.
InChI:InChI=1/Na.H2O3S/c;1-4(2)3/h;(H2,1,2,3)/q+1;/p-2

7631-90-5 Well-known Company Product Price

Brand (Code)Product description CAS number Packaging Price Detail
Sigma-Aldrich (13438)  Sodiumbisulfitesolution  purum, ~40% 7631-90-5 13438-4X2.5L-R 3,348.54CNY Detail
Sigma-Aldrich (13438)  Sodiumbisulfitesolution  purum, ~40% 7631-90-5 13438-6X1L-R 2,194.92CNY Detail
Sigma-Aldrich (13438)  Sodiumbisulfitesolution  purum, ~40% 7631-90-5 13438-2.5L-R 965.25CNY Detail
Sigma-Aldrich (13438)  Sodiumbisulfitesolution  purum, ~40% 7631-90-5 13438-1L-R 469.17CNY Detail
Sigma-Aldrich (243973)  Sodiumbisulfite  ACS reagent, mixture of NaHSO3 and Na2S2O5 7631-90-5 243973-2.5KG 2,095.47CNY Detail
Sigma-Aldrich (243973)  Sodiumbisulfite  ACS reagent, mixture of NaHSO3 and Na2S2O5 7631-90-5 243973-1KG 1,591.20CNY Detail
Sigma-Aldrich (243973)  Sodiumbisulfite  ACS reagent, mixture of NaHSO3 and Na2S2O5 7631-90-5 243973-500G 827.19CNY Detail
Sigma-Aldrich (243973)  Sodiumbisulfite  ACS reagent, mixture of NaHSO3 and Na2S2O5 7631-90-5 243973-100G 260.91CNY Detail
Sigma-Aldrich (243973)  Sodiumbisulfite  ACS reagent, mixture of NaHSO3 and Na2S2O5 7631-90-5 243973-5G 262.08CNY Detail

7631-90-5SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 16, 2017

Revision Date: Aug 16, 2017

1.Identification

1.1 GHS Product identifier

Product name sodium hydrogensulfite

1.2 Other means of identification

Product number -
Other names sodium,hydrogen sulfite

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:7631-90-5 SDS

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