P2522
Potassium disulfite
≥98%
Synonym(s):
Potassium metabisulfite, Potassium pyrosulfite
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About This Item
Linear Formula:
K2S2O5
CAS Number:
Molecular Weight:
222.32
NACRES:
NA.55
PubChem Substance ID:
UNSPSC Code:
12352302
EC Number:
240-795-3
MDL number:
Assay:
≥98%
Form:
powder
Quality Level
assay
≥98%
form
powder
SMILES string
[K+].[K+].[O-]S(=O)S([O-])(=O)=O
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
General description
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.
Application
Potassium disulfite has been used in a protocol for the modification of the polydimethylsiloxane (PDMS) polymer surfaces.
It may be used in the following processes:
It may be used in the following processes:
- Chemical etching of poly(vinylidene fluoride) in β-phase (β-PVDF) irradiated films.
- Decolorization during the synthesis of 2-iodopyrimidine derivatives.
- Palladium-catalyzed aminosulfonylation of aryl halides.
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signalword
Danger
supp_hazards
Storage Class
11 - Combustible Solids
wgk
WGK 1
hcodes
Hazard Classifications
Eye Dam. 1 - Skin Irrit. 2
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A palladium-catalyzed reaction of aryl halides, potassium metabisulfite, and hydrazines.
Ye S and Wu J.
Chemical Communications (Cambridge, England), 48(80), 10037-10039 (2012)
Biofunctionalization and self-interaction chromatography in PDMS microchannels.
Deshpande KS, et al.
Biochemical Engineering Journal, 67, 111-119 (2012)
Nanoporous β-PVDF membranes with selectively functionalized pores.
Cuscito O, et al.
Nucl. Instrum. Methods Phys. Res. Sect. B, 265(1), 309-313 (2007)