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Potassium disulfite

Catalog No. 60508 Name Sigma Aldrich
CAS Number 16731-55-8 Website http://www.sigmaaldrich.com
M. F. K2O5S2 Telephone 1-800-521-8956
M. W. 222.3236 Fax
Purity ≥97.0% (RT) Email
Storage Chembase ID: 129071

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 Pictograms GHS07
GHS Signal Word Warning
GHS Hazard statements H315-H319-H335
European Hazard Symbols Irritant Irritant (Xi)
MSDS Link Download
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

DETAILS

REFERENCES