Sodium bisulfite
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| Names | |
|---|---|
| IUPAC name
Sodium hydrogen sulfite | |
| Other names
E222, sodium bisulphite | |
| Identifiers | |
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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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CompTox Dashboard (EPA) |
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| Properties | |
| 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) |
1.526 |
| Hazards | |
| NFPA 704 (fire diamond) | |
| Flash point | Non-flammable |
| NIOSH (US health exposure limits): | |
PEL (Permissible) |
none[1] |
REL (Recommended) |
TWA 5 mg/m3[1] |
IDLH (Immediate danger) |
N.D.[1] |
| Related compounds | |
Other anions |
Sodium sulfite Sodium metabisulfite |
Other cations |
Potassium bisulfite |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
 verify (what is  ?) | |
| Infobox references | |
Sodium bisulfite, also known as sodium hydrogen sulfite, is a chemical compound. Its chemical formula is NaHSO3. It is made of sodium and bisulfite ions. It is a white solid with an odor of sulfur dioxide. It can be made by reacting smaller amounts of sodium dioxide and sodium hydroxide or sodium bicarbonate. If too much sodium hydroxide is used, sodium disulfite is made instead.
Related pages
[change | change source]References
[change | change source]- 1 2 3 NIOSH Pocket Guide to Chemical Hazards. "#0561". National Institute for Occupational Safety and Health (NIOSH).
