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658510

Sigma-Aldrich

Potassium sulfite

90%

Synonym(s):

dipotassiumsulfite

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About This Item

Linear Formula:
K2SO3
CAS Number:
10117-38-1
Molecular Weight:
158.26
EC Number:
233-321-1
MDL number:
MFCD00011387
UNSPSC Code:
12352302
PubChem Substance ID:
24884361
NACRES:
NA.22

Quality Level

200

Assay

90%

SMILES string

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

InChI

1S/2K.H2O3S/c;;1-4(2)3/h;;(H2,1,2,3)/q2*+1;/p-2

InChI key

BHZRJJOHZFYXTO-UHFFFAOYSA-L

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Application

Potassium sulfite (K2SO3) can be used as a catalyst in the oxidation of sulfur dioxide. It is also used as an anionic catalyst for the cyclotrimerization of aryl isocyanates to prepare heterocyclic symmetrical isocyanurates.

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
MKCN0769
MKCM6306
MKCL9132
MKCG0137
MKCF8423

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