Sodium metabisulfite

• Catalog No.: 13459
• CAS Number: 7681-57-4
• M. F.: Na2O5S2
• M. W.: 190.10654
• Purity: 65.0-67.4% SO2 basis

SYNONYMS

• Title: 偏重亚硫酸钠
• IUPAC name: disodium sulfinatosulfonate
• IUPAC Traditional name: disodium metabisulfite
• Synonyms: 焦亚磷酸钠; Sodium disulfite; Sodium pyrosulfite; 偏二亚硫酸钠

DATABASE IDS

• PubChem SID: 24848168
• MDL Number: MFCD00167602
• EC Number: 231-673-0
• CAS Number: 7681-57-4

PROPERTIES

• Antion Traces: chloride (Cl-): ≤100 mg/kg
• Cation Traces: As: ≤2 mg/kg
• Cation Traces: Cu: ≤10 mg/kg
• Cation Traces: Fe: ≤10 mg/kg
• Cation Traces: Hg: ≤1 mg/kg
• Cation Traces: Pb: ≤2 mg/kg
• Cation Traces: Se: ≤5 mg/kg
• Cation Traces: Zn: ≤10 mg/kg
• Grade: puriss.
• Impurities: residue of solvents, complies
• Impurities: ≤0.02% thiosulfate (S2O3)
• Linear Formula: Na2S2O5
• Purity: 65.0-67.4% SO2 basis
• Purity: 97-100.5%
• Quality: dry
• Quality: meets analytical specification of Ph. Eur., BP, NF, FCC, E223
• Suitability: complies for appearance of solution
• Melting Point: >300 °C(lit.)
• pH: 3.5-5.0 (20 °C, 5%)
• GHS Signal Word: Danger
• GHS Hazard statements: H302-H318
• European Hazard Symbols: Harmful (Xn)
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves
• GHS Precautionary statements: P280-P305 + P351 + P338
• Risk Statements: 22-31-41
• RTECS: UX8225000
• Safety Statements: 26-39-46
• Supplemental Hazard Statements: Contact with acids liberates toxic gas.
• German water hazard class: 1