Potassium disulfite

• Catalog No.: 60508
• CAS Number: 16731-55-8
• M. F.: K2O5S2
• M. W.: 222.3236
• Purity: ≥97.0% (RT)

SYNONYMS

• Title: 焦亚硫酸钾
• IUPAC name: dipotassium sulfinatosulfonate
• IUPAC Traditional name: dipotassium metabisulfite
• Synonyms: 偏硫代硫酸钾; Potassium pyrosulfite; Potassium metabisulfite; 偏重亚硫酸钾

DATABASE IDS

• PubChem SID: 24881901
• CAS Number: 16731-55-8
• MDL Number: MFCD00167605
• EC Number: 240-795-3

PROPERTIES

• abs.: absorption0.1M/308 nm, H2O cut-off
• Antion Traces: chloride (Cl-): ≤50 mg/kg
• Cation Traces: Al: ≤5 mg/kg
• Cation Traces: As: ≤0.1 mg/kg
• Cation Traces: Ba: ≤5 mg/kg
• Cation Traces: Bi: ≤5 mg/kg
• Cation Traces: Ca: ≤10 mg/kg
• Cation Traces: Cd: ≤5 mg/kg
• Cation Traces: Co: ≤5 mg/kg
• Cation Traces: Cr: ≤5 mg/kg
• Cation Traces: Cu: ≤5 mg/kg
• Cation Traces: Fe: ≤5 mg/kg
• Cation Traces: Li: ≤5 mg/kg
• Cation Traces: Mg: ≤5 mg/kg
• Cation Traces: Mn: ≤5 mg/kg
• Cation Traces: Mo: ≤5 mg/kg
• Cation Traces: Na: ≤1000 mg/kg
• Cation Traces: Ni: ≤5 mg/kg
• Cation Traces: Pb: ≤5 mg/kg
• Cation Traces: Sr: ≤5 mg/kg
• Cation Traces: Zn: ≤5 mg/kg
• Impurities: insoluble matter, passes filter test
• Linear Formula: K2S2O5
• Product Line: BioUltra
• Purity: ≥97.0% (RT)
• pH: 2.5-4.5 (25 °C, 0.1 M in H2O)
• Solubility: H2O: soluble0.1 M at 20 °C, clear, colorless
• GHS Signal Word: Warning
• GHS Hazard statements: H315-H319-H335
• European Hazard Symbols: Irritant (Xi)
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves
• GHS Precautionary statements: P261-P305 + P351 + P338
• Risk Statements: 31-36/37/38
• RTECS: TT4920000
• Safety Statements: 26-36
• Supplemental Hazard Statements: Contact with acids liberates toxic gas.
• German water hazard class: 1