Functional Roles
Industries Served
Physical Properties
melting_point
Decomposes (NIOSH, 2024)
boiling_point
Decomposes (NIOSH, 2024)
density
1.48 at 68 u00b0F (USCG, 1999) - Denser than water; will sink
solubility
29 % (NIOSH, 2024)
vapor_pressure
Vapor pressure, kPa at 20 u00b0C: 2.4
ph
2,5-5,5 (10 % aqueous solution)
GHS / SDS Safety
Danger
Irritant
Health Hazard
Corrosive
- H335: May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]
- H334: May cause allergy or asthma symptoms or breathing difficulties if inhaled [Danger Sensitization, respiratory]
- H317: May cause an allergic skin reaction [Warning Sensitization, Skin]
- H302: Harmful if swallowed [Warning Acute toxicity, oral]
- H318: Causes serious eye damage [Danger Serious eye damage/eye irritation]
- H320: Causes eye irritation [Warning Serious eye damage/eye irritation]
- H372: Causes damage to organs through prolonged or repeated exposure [Danger Specific target organ toxicity, repeated exposure]
- H302 (99.9%): Harmful if swallowed [Warning Acute toxicity, oral]
Chemical Identity
| CAS Number | 7631-90-5 |
| IUPAC Name | sodium hydrogen sulfite |
| InChI Key | DWAQJAXMDSEUJJ-UHFFFAOYSA-M |
| PubChem CID | 23665763 |
| INCI Name | SODIUM BISULFITE |
Synonyms & Trade Names
Full Description
Reductant / ORP control