Sodium sulfite
SIGALD/13471 - puriss., meets analytical specification of Ph. Eur., BP, NF, anhydrous, 95.0-100.0% (iodometric)
CAS Number: 7757-83-7
Empirical Formula (Hill Notation): Na2O3S
Molecular Weight: 126.04
EC Number: 231-821-4
MDL Number: MFCD00003503
Linear Formula: Na2SO3
Product Type: Chemical
anion traces | chloride (Cl-): ≤200 mg/kg |
assay | 95.0-100.0% (iodometric) |
cation traces | Fe: ≤10 mg/kg |
Se: ≤10 mg/kg | |
Zn: ≤10 mg/kg | |
form | solid |
grade | puriss. |
impurities | residual solvents, complies |
≤0.001% heavy metals (as Pb) | |
≤0.05% thiosulfate (S2O3) | |
InChI | 1S/2Na.H2O3S/c;;1-4(2)3/h |
InChI key | GEHJYWRUCIMESM-UHFFFAOYSA |
pH | 9.0-10.5 (25 °C, 126 g/L) |
quality | meets analytical specification of Ph. Eur., BP, NF |
Quality Level | 100 ![]() |
SMILES string | [Na+].[Na+].[O-]S([O-])=O |
suitability | complies for appearance of solution |
Risk Statements | 31 |
RIDADR | NONH for all modes of transport |
WGK Germany | WGK 1 |
Flash Point(F) | Not applicable |
Flash Point(C) | Not applicable |
Supplemental Hazard Statements | EUH031 |
Purity | 95.0-100.0% (iodometric) |
UNSPSC | 12352300 |