Sodium bisulfite
SIGALD/799394 - anhydrous, free-flowing, Redi-Dri™, ACS reagent
Synonym: Sodium hydrogensulfite
CAS Number: 7631-90-5
Empirical Formula (Hill Notation): NaHSO3
Molecular Weight: 104.06
Linear Formula: NaHSO3
Product Type: Chemical
anion traces | chloride (Cl-): ≤0.02% |
cation traces | Fe: ≤0.002% |
heavy metals (as Pb): ≤0.001% | |
concentration | ≥58.5% SO2 |
form | powder |
grade | ACS reagent |
anhydrous | |
impurities | ≤0.005% insolubles |
InChI | 1S/Na.H2O3S/c;1-4(2)3/h;( |
InChI key | DWAQJAXMDSEUJJ-UHFFFAOYSA |
pH | 4.3 (10 g/L) |
product line | Redi-Dri™ |
quality | free-flowing |
Quality Level | 100 ![]() |
SMILES string | [Na+].OS([O-])=O |
General description: | Sodium bisulfite is an inorganic sodium salt commonly used as a pH adjuster and reductant. It is used as a cheap catalyst for the formation of C-O and C-C bond. |
Legal Information: | Redi-Dri is a trademark of Sigma-Aldrich Co. LLC |
Packaging: | 1, 2.5 kg in poly bottle |
Packaging: | 100, 500 g in poly bottle |
Symbol | ![]() |
Signal word | Warning |
Hazard statements | H302 |
Precautionary statements | P264 - P270 - P301 + P312 - P501 |
WGK Germany | WGK 1 |
Flash Point(F) | Not applicable |
Flash Point(C) | Not applicable |
Supplemental Hazard Statements | EUH031 |
UNSPSC | 12352300 |