799394

Sodium bisulfite

anhydrous, free-flowing, Redi-Dri^™, ACS reagent

• Synonym(s): Sodium hydrogensulfite
• Empirical Formula (Hill Notation): NaHSO₃
• CAS Number: 7631-90-5
• Molecular Weight: 104.06
• MDL number: MFCD00003530
• UNSPSC Code: 12352302
• PubChem Substance ID: 24854644
• NACRES: NA.21
• grade: ACS reagent; anhydrous
• form: powder

Properties

• grade: ACS reagent; anhydrous
• Quality Level: 100
• product line: Redi-Dri^™
• form: powder
• quality: free-flowing
• concentration: ≥58.5% SO₂
• impurities: ≤0.005% insolubles
• pH: 4.3 (10 g/L)
• anion traces: chloride (Cl^-): ≤0.02%
• cation traces: Fe: ≤0.002%; heavy metals (as Pb): ≤0.001%
• SMILES string: [Na+].OS([O-])=O
• InChI: 1S/Na.H2O3S/c;1-4(2)3/h;(H2,1,2,3)/q+1;/p-2
• InChI key: DWAQJAXMDSEUJJ-UHFFFAOYSA-L

Description

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

Safety Information

• Pictograms: GHS07
• Signal Word: Warning
• Hazard Statements: H302
• Precautionary Statements: P264 - P270 - P301 + P312 - P501
• Hazard Classifications: Acute Tox. 4 Oral
• Supplementary Hazards: EUH031
• Storage Class Code: 13 - Non Combustible Solids
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable