(Redirected from Sodium hydrogen sulfite)
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| Names | |
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| IUPAC name
Sodium hydrogen sulfite
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| Other names
E222, sodium bisulphite
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| Identifiers | |
3D model (JSmol)
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| ChEBI | |
| ChEMBL | |
| ChemSpider | |
| ECHA InfoCard | 100.028.680 |
| E number | E222 (preservatives) |
PubChem CID
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| RTECS number |
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| UNII | |
CompTox Dashboard (EPA)
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| Properties | |
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| NaHSO3 | |
| Molar mass | 104.061 g/mol |
| Appearance | White solid |
| Odor | Slight sulfurous odor |
| Density | 1.48 g/cm3 |
| Melting point | 150 °C (302 °F; 423 K) |
| Boiling point | 315 °C (599 °F; 588 K) |
| 42 g/100 mL | |
Refractive index (nD)
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1.526 |
| Hazards | |
| GHS labelling: | |
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| H302 | |
| P301+P312+P330 | |
| NFPA 704 (fire diamond) | |
| Flash point | Non-flammable |
| NIOSH (US health exposure limits): | |
PEL (Permissible)
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none[1] |
REL (Recommended)
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TWA 5 mg/m3[1] |
IDLH (Immediate danger)
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N.D.[1] |
| Related compounds | |
Other anions
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Sodium sulfite Sodium metabisulfite Sodium biselenite |
Other cations
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Potassium bisulfite |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Sodium bisulfite (or sodium bisulphite, sodium hydrogen sulfite) is a chemical mixture with the approximate chemical formula NaHSO3. Sodium bisulfite in fact is not a real compound,[2] but a mixture of salts that dissolve in water to give solutions composed of sodium and bisulfite ions. It appears in form of white or yellowish-white crystals with an odor of sulfur dioxide. Regardless of its ill-defined nature, sodium bisulfite is used in many different industries such as a food additive with E number E222 in the food industry, a reducing agent in the cosmetic industry, and a decomposer of residual hypochlorite used in the bleaching industry.[3][4][5]
https://en.wikipedia.org/wiki/Sodium_bisulfite
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