POTASSIUM SULFITE Chemical Properties

Density 

2.353[at 20℃]

solubility 

slightly soluble in ethanol

color 

colorless hexagonal, hexane crystals, crystalline

Odor

odorless

Water Solubility 

1060g/L at 25℃

Merck 

13,7761

CAS DataBase Reference

10117-38-1(CAS DataBase Reference)

EPA Substance Registry System

Potassium sulfite (10117-38-1)

Safety Information

Hazard Codes 

Xi

Risk Statements 

36/37/38-31

Safety Statements 

26-36

WGK Germany 

1

F 

9

HS Code 

2832200000

Hazardous Substances Data

10117-38-1(Hazardous Substances Data)

MSDS

• Language:English Provider:SigmaAldrich

POTASSIUM SULFITE Usage And Synthesis

Chemical Properties

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

Chemical Properties

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

Uses

Potassium Sulfite is used as a fabric treatment chemical.

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.

POTASSIUM SULFITE(10117-38-1)Related Product Information

• Orthophosphorus acid
• Ammonium bisulfite
• METHYLENEDIPHOSPHONIC ACID
• Sodium sulfite
• Ammonium Sulfite
• SILVER(I) SULFITE
• D-Glucosamine sulfate
• Potash Sulfurated
• 8-HYDROXYQUINOLINE POTASSIUM SULFATE
• Potassium sulfate
• POTASSIUM SULFITE
• POTASSIUM THIOSULFATE HYDRATE
• potassium hydrogenperoxomonosulphate
• Potassium thiosulfate
• POTASSIUM METABISULFITE
• Potassium dithionite
• POTASSIUM SULFIT
• POTASSIUM HYDROGEN SULFITE