Title: Ammonium Sulfite
CAS Registry Number: 10196-04-0
Molecular Formula: H8N2O3S
Molecular Weight: 116.14
Percent Composition: H 6.94%, N 24.12%, O 41.33%, S 27.61%
Line Formula: (NH4)2SO3
Literature References: Prepn: Gmelins, Ammonium (8th ed.) 23, pp 256-258 (1936).
Derivative Type: Monohydrate
Properties: Efflorescent crystals. Under the influence of air and heat loses all its water of crystallization and is gradually oxidized to (NH4)2SO4. Sol in water; almost insol in alcohol, acetone. Its aq soln is alkaline to litmus. Keep tightly closed and in a cool place.
Use: In photography; as reducing agent; in bricks for blast-furnace linings; in lubricants for metal cold-working. |