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Substance Name: Potassium metabisulfite [NF]
RN: 16731-55-8
UNII: 65OE787Q7W
InChIKey: RWPGFSMJFRPDDP-UHFFFAOYSA-L

Molecular Formulas

  • H2-O5-S2.2K
  • K2-S2-O5
  • O5-S2.K2

Molecular Weight

  • 222.323
 

Classification Codes

Classification Codes

  • Mutation Data
  • Pharmaceutic Aid (Antioxidant)
  • Reproductive Effect
  • Tumor Data

Superlist Classification Code

  • Overall Carcinogenic Evaluation: Group 3
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Names and Synonyms

Name of Substance

  • Disulfurous acid, dipotassium salt
  • Potassium metabisulfite
  • Potassium metabisulfite [NF]
  • Potassium pyrosulfite

Synonyms

  • CCRIS 1427
  • Dipotassium disulfite
  • Dipotassium metabisulfite
  • Dipotassium pyrosulfite
  • EC 240-795-3
  • EINECS 240-795-3
  • HSDB 5062
  • Potassium disulfite
  • Potassium disulfite (K2S2O5)
  • Potassium metabisulfite
  • Potassium pyrosulfite
  • Pyrosulfurous acid, dipotassium salt
  • UNII-65OE787Q7W

Systematic Names

  • Dipotassium disulphite
  • Disulfurous acid, dipotassium salt
  • Disulfurous acid, potassium salt (1:2)
  • Potassium pyrosulfite

Superlist Name

  • Potassium metabisulfite

Registry Numbers

CAS Registry Number

  • 16731-55-8

FDA UNII

  • 65OE787Q7W

Other Registry Number

  • 4429-42-9

System Generated Number

  • 0016731558

Molecular Formulas

Molecular Formulas

  • H2-O5-S2.2K
  • K2-S2-O5
  • O5-S2.K2

Molecular Formula Fragments

  • COMPONENT
  • H2-O5-S2
  • K
  • K2
  • O5-S2

Structure Descriptors

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

InChIKey

RWPGFSMJFRPDDP-UHFFFAOYSA-L

Smiles

[K+].[K+].[O-]S(=O)S(=O)(=O)[O-]