Nomenclature
CAS number: 10117-38-1
K
2O
3S; mol wt 158.26.
K 49.41%, O 30.33%, S 20.26%.
K
2SO
3.
Description and references
The sulfite of commerce is 90-95% pure.
Derivative
Dihydrate.
Properties
White crystals or cryst powder; gradually oxidizes
in the air to sulfate. Soluble in about 3.5 parts water, slightly
in alcohol; dec by dil acids with evolution of sulfur dioxide. pH
about 8. Keep well closed in a cool place.Use
In photographic developers.
Therapeutic Category
Cathartic, diuretic.
Keywords
Laxative/Cathartic