Potassium Sulfite
Structural Formula Vector Image
Title: Potassium Sulfite
CAS Registry Number: 10117-38-1
Molecular Formula: K2O3S
Molecular Weight: 158.26
Percent Composition: K 49.41%, O 30.33%, S 20.26%
Line Formula: K2SO3
Literature References: The sulfite of commerce is 90-95% pure.
 
Derivative Type: 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.
Therap-Cat: Cathartic, diuretic.
Keywords: Laxative/Cathartic.

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