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POTASSIUM SULFITE

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POTASSIUM SULFITE Basic information

Product Name:
POTASSIUM SULFITE
CAS:
10117-38-1
MF:
K2O3S
MW:
158.2598
EINECS:
233-321-1
Mol File:
10117-38-1.mol
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POTASSIUM SULFITE Chemical Properties

Merck 
13,7761
CAS DataBase Reference
10117-38-1(CAS DataBase Reference)
EPA Substance Registry System
Potassium sulfite (10117-38-1)
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Safety Information

Hazard Codes 
Xi
Risk Statements 
36/37/38-31
Safety Statements 
26-36
WGK Germany 
1
9

MSDS

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POTASSIUM SULFITE Usage And Synthesis

Chemical Properties

White crystals or powder. Soluble in water; sparingly soluble in alcohol; decomposes on heating and slowly oxidizes in air.

Chemical Properties

Potassium sulfite, K2SO3·2H2O; potassium hydrogen sulfite, KHSO3; white solids, similar in properties and formation to the corresponding sodium sulfites.

Uses

Photographic developer, medicine (cathartic), food and wine preservative.

Definition

potassium sulphite: A white crystallinesolid, K2SO3, soluble in waterand very sparingly soluble inethanol; r.d. 1.51; decomposes onheating. It is a reducing agent and isused as such in photography and inthe food and brewing industries,where it prevents oxidation.

Safety Profile

When heated to decomposition it emits toxic fumes of SOx and K2O. See also SULFUROUS ACID and SULFITES.

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