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| CAS No.: | 15181-46-1 |
|---|---|
| Name: | sulfurous acid |
| Molecular Structure: | |
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| Formula: | HO3 S |
| Molecular Weight: | 81.07 |
| Synonyms: | Bisulfite;Bisulphite; Hydrogen sulfite; Hydrogen sulfite(1-); Hydrosulfite anion;Sulfate(2-), hydroxydioxo-; Sulfite (HSO3-); Sulfite (HSO31-); Sulfurous acid,ion(1-) |
| Density: | 2.483g/cm3 |
| Boiling Point: | °Cat760mmHg |
| Flash Point: | °C |
| Safety: | Mutation data reported. A corrosive. When heated to decomposition it emits toxic fumes of SOx. See also SULFITES. |
| PSA: | 79.57000 |
| LogP: | 0.20420 |
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Chemistry
IUPAC Name: Hydrogen sulfite
Synonyms of Hydrogen sulfite (CAS NO.15181-46-1) : Hydrogène sulfite ; Hydrogen-sulfit ; Sulfurous acid, ion(1-)
CAS NO: 15181-46-1
Molecular Formula:HO3S-
Molecular Weight :81.0717
Molecular Structure :.png)
Uses
Bisulfite salts are common additives to the drug epinephrine in order to prevent its oxidation to adrenochrome and resulting inactivation. Bisulfites can sometimes cause an allergic reaction. This is different from the common sulfa drugs allergy.
Production
Preparation Products : 3,7-Dimethyl-7-hydroxyoctanal
HSO3− is the conjugate base of sulfurous acid, H2SO3
Toxicity Data With Reference
| 1. | mmo-esc 1 mol/L | ENMUDM Environmental Mutagenesis. 2 (1980),239. | ||
| 2. | otr-ham:emb 1 mmol/L | CRNGDP Carcinogenesis. 3 (1982),27. |
Safety Profile
Mutation data reported. A corrosive. When heated to decomposition it emits toxic fumes of SOx. See also SULFITES.
Standards and Recommendations
DOT Classification: 8; Label: Corrosive
Specification
1.General Description : Bisulphites, aqueous solutions are light colored liquids. They can cause severe burns to skin, eyes and mucous membranes.Hydrogen sulfite (CAS NO.15181-46-1) is noncombustible. If available, obtain the technical name of the material from the shipping papers and contact CHEMTREC, 800-424-9300 for specific response information.
2.Reactivity Profile :When Hydrogen sulfite (CAS NO.15181-46-1) is heated to decomposition or on contact with mineral acids sulfurous acid emits highly toxic fumes of sulfur dioxide gas
3.Health Hazard :TOXIC; inhalation, ingestion or skin contact with material may cause severe injury or death. Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.
4.Fire Hazard :Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated.