Sodium Metabisulfite CAS #: 7681-57-4

Synonyms Sodium disulfite, Sodium pyrosulfite, sodium metabisulphite or sodium pyrosulphite, Disodium disulfite, Natrium pyrosulfit, Disodium oxidosulfanesulfonate oxide, sulfanesulfonate, 1-olato-, oxide, sodium salt (1:2), Disodium pyrosulfite, sodium metabisulphite, sodium pyrosulphite

Compound Formula: Na2S2O5 Molecular Weight: 190.1 Appearance: White crystals or poqder Melting Point: >300 °C Boiling Point: N/A Density: 1.4 g/cm3 Solubility in H2O: N/A pH: 3.5-5.0 (20 °C, 5%) Exact Mass: 189.898254 Monoisotopic Mass: 189.898254

Health & Safety Information Signal Word: Danger Hazard Statements: H302-H318 Hazard Codes: C, Xi Precautionary Statements: P280-P301 + P312 + P330-P305 + P351 + P338 + P310 Risk Codes: 22-31-41 Safety Statements: 26-39-46 RTECS Number: UX8225000 Transport Information: NONH for all modes of transport WGK Germany: 1 GHS Pictogram: Image,Image

Chemical Identifiers Linear Formula: Na2S2O5 Pubchem CID: 656671 MDL Number: MFCD00167602 EC No.: 231-673-0 IUPAC Name: disodium oxidosulfanesulfonate oxide Beilstein/Reaxys No.: N/A SMILES: [O-]S(=O)S(=O)(=O)[O-].[Na+].[Na+] InchI Identifier: InChI=1S/2Na.H2O5S2/c;;1-6(2)7(3,4)5/h;;(H,1,2)(H,3,4,5)/q2*+1;/p-2 InchI Key: HRZFUMHJMZEROT-UHFFFAOYSA-L