Ammonium sulfite monohydrate Chemical Properties

Melting point:

60-70°C

Density 

1.41 g/mL at 25 °C(lit.)

refractive index 

1.515

storage temp. 

Store below +30°C.

solubility 

insoluble in ethanol, acetone

form 

Crystalline

Specific Gravity

1.41

color 

White

Water Solubility 

Soluble in water. Insoluble in acetone and alcohol.

Sensitive 

Air Sensitive

Merck 

14,557

Safety Information

Hazard Codes 

Xi

Risk Statements 

31-36/37/38

Safety Statements 

26-36

WGK Germany 

3

TSCA 

Yes

Ammonium sulfite monohydrate Usage And Synthesis

Chemical Properties

colorless crystal(s); loses H2O and gradually oxidizes to (NH4)2SO4 when heated in air; hygroscopic; used in medicine, metal lubricants, as a chemical reducing agent [MER06] [HAW93]

Physical properties

White or pale yellow solution. Thermal decomposition. Soluble in water, slightly soluble in ethanol, hardly soluble in acetone. The relative density of the saturated solution is 1.1995 (20°C), which is alkaline. Strong corrosion to steel.

Uses

Ammonium Sulfite is an additive used in the production of caramel.

Uses

Ammonium sulfite monohydrate is used in caramel coloring in the food industry. It is also used in cosmetics as a hair straightening agent and a hair waving agent. It acts as a reducing agent in photography. Further, it is used in the production of bricks in order to use in blast furnace linings. In addition to this, it used in gas scrubbers.

Precautions

Air sensitive. Incompatible with strong oxidizing agents, ammonia and acids.

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