658510
Potassium sulfite
90%
Synonym(s):
dipotassiumsulfite
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About This Item
Linear Formula:
K2SO3
CAS Number:
Molecular Weight:
158.26
NACRES:
NA.22
PubChem Substance ID:
UNSPSC Code:
12352302
EC Number:
233-321-1
MDL number:
Assay:
90%
Form:
powder
Solubility:
water: soluble (1,060 g/l at 25 °C (77 °F))
Quality Level
assay
90%
form
powder
solubility
water: soluble (1,060 g/l at 25 °C (77 °F))
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
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.
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Storage Class
11 - Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
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David Crich et al.
Journal of the American Chemical Society, 128(8), 2544-2545 (2006-02-24)
Alkylation of potassium selenosulfate with allylic halides gives Se-allyl seleno Bunte salts. On reaction with thiols at room temperature, these afford mixed dialkyl selenosulfides, which undergo 2,3-sigmatropic rearrangement with loss of selenium, either spontaneously or with assistance by triphenylphosphine, thereby
Xinjian Shi et al.
Nature communications, 5, 4775-4775 (2014-09-03)
Tungsten trioxide/bismuth vanadate heterojunction is one of the best pairs for solar water splitting, but its photocurrent densities are insufficient. Here we investigate the advantages of using helical nanostructures in photoelectrochemical solar water splitting. A helical tungsten trioxide array is