Chem
J-GLOBAL ID:200907096991450383   Nikkaji number:J43.952E

Potassium pyrosulfite

ピロ亜硫酸カリウム
Substance type:
Substance type
Substance type classified into 3 categories.
Decided structure: Substances with a clear structure
Undicided Structure: Substances with unknown or undetermined structure
Mixtures: Mixtures, racemic compounds, or compounds with relative structural arrangements
Decided structure
Molecular formula: K2O5S2
Molecular formula furigana: K2-O5-S2
Molecular weight: 222.310
InChI: InChI=1S/2K.H2O5S2/c;;1-6(2)7(3,4)5/h;;(H,1,2)(H,3,4,5)/q2*+1;/p-2
InChI key: RWPGFSMJFRPDDP-UHFFFAOYSA-L
SMILES: [K]OS(=O)S(=O)(=O)O[K]
Systematic name  (4):
  • 二亜硫酸ジカリウム
  • 二亜硫酸二カリウム
  • ({[(ポタッシオオキシ)スルフィニル]スルホニル}オキシ)カリウム
  • ({[(potassiooxy)sulfinyl]sulfonyl}oxy)potassium
Other name (9):
  • ピロ亜硫酸カリウム
  • Potassium pyrosulfite
  • メタ二亜硫酸カリウム
  • Potassium metabisulfide
  • Disulfurous acid dipotassium salt
Show all
CAS registry number: 16731-55-8
Regulation number (2):
  • EINECS2407953
  • TSCA(16731-55-8)
KEGG DRUG: D05581
Thsaurus map:

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