Potassium pyrosulfite - ≥97% , CAS No.16731-55-8

CAS: 16731-55-8 Cat. No.: P299315 Formula: K₂S₂O₅ Molecular Weight: 222.32 EC Number: 240-795-3

GRADE & PURITY ≥97%

Synonyms

POTASSIUM METABISULFITE|16731-55-8|Potassium disulfite|Potassium pyrosulfite|Dipotassium pyrosulfite|Sobisu|potassium metabisulphite|Potassium pentaoxodisulfate|Ins-224|Potassium metabisulfite [NF]|Potassium metabisulfite (e 224)|65OE787Q7W|Dipotassium di

Storage

Room temperature,Argon charged

Shipped In

Normal

Overview

Potassium disulfite (Potassium metabisulfite, PMB) is an inorganic salt with antimicrobial properties. It is a sulfiting agent that prevents browning of foods. Its genotoxic and cytotoxic effect has been assessed. PMB undergoes hydrolysis to form potassium bisulfite.

Specifications

Synonyms

POTASSIUM METABISULFITE | 16731-55-8 | Potassium disulfite | Potassium pyrosulfite | Dipotassium pyrosulfite | Sobisu | potassium metabisulphite | Potassium pentaoxodisulfate | Ins-224 | Potassium metabisulfite [NF] | Potassium metabisulfite (e 224) | 65OE787Q7W | Dipotassium di

Specifications & Purity

≥97%

Storage

Room temperature,Argon charged

Shipped In

Normal

Purity

≥97%

Names and Identifiers

Pubchem Sid

508814655

Canonical Smiles

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

InChIKey

RWPGFSMJFRPDDP-UHFFFAOYSA-L

INCHI

1S/2K.H2O5S2/c;;1-6(2)7(3,4)5/h;;(H,1,2)(H,3,4,5)/q2*+1;/p-2

Isomeric SMILES

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

UN Number

1759

Packing Group

I

Molecular Weight

222.32

Reaxy-Rn

14412766

Reaxys-RN_link_address

https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=14412766&ln=

Taxonomic Classification

Taxonomy Tree

• Kingdom Inorganic compounds
  • Superclass Mixed metal/non-metal compounds
    • Class Alkali metal oxoanionic compounds
      • Subclass Alkali metal dithionites

• Kingdom: Inorganic compounds
• Superclass: Mixed metal/non-metal compounds
• Class: Alkali metal oxoanionic compounds
• Subclass: Alkali metal dithionites
• Intermediate Tree Nodes: Not available
• Direct Parent: Alkali metal dithionites
• Alternative Parents: Inorganic salts Inorganic oxides
• Molecular Framework: Not available
• Substituents: Alkali metal dithionite - Inorganic oxide - Inorganic salt
• Description: This compound belongs to the class of inorganic compounds known as alkali metal dithionites. These are inorganic compounds in which the largest oxoanion is dithionite, and in which the heaviest atom not in an oxoanion is an alkali metal.
• External Descriptors: Not available

Data sources

1. Djoumbou Feunang Y, Eisner R, Knox C, Chepelev L, Hastings J, Owen G, Fahy E, Steinbeck C, Subramanian S, Bolton E, Greiner R, and Wishart DS. ClassyFire: Automated Chemical Classification With A Comprehensive, Computable Taxonomy. Journal of Cheminformatics, 2016, 8:61.

DOI: 10.1186/s13321-016-0174-y

Chemical and Physical Properties

• Solubility: Soluble in water. Insoluble in ethanol.
• Sensitivity: Air & Moisture Sensitive
• Melt Point(°C): 190°C
• Molecular Weight: 222.330 g/mol
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 6
• Rotatable Bond Count: 0
• Exact Mass: 221.846 Da
• Monoisotopic Mass: 221.846 Da
• Topological Polar Surface Area: 125.000 Ų
• Heavy Atom Count: 9
• Formal Charge: 0
• Complexity: 136.000
• Isotope Atom Count: 0
• Defined Atom Stereocenter Count: 0
• Undefined Atom Stereocenter Count: 0
• Defined Bond Stereocenter Count: 0
• Undefined Bond Stereocenter Count: 0
• The total count of all stereochemical bonds: 0
• Covalently-Bonded Unit Count: 3

XLogP3