Calcium Sulfite
Title: Calcium Sulfite
CAS Registry Number: 10257-55-3
Molecular Formula: CaO3S
Molecular Weight: 120.14
Percent Composition: Ca 33.36%, O 39.95%, S 26.69%
Line Formula: CaSO3
Literature References: Prepn: Gmelins, Calcium (8th ed.) 28B, 107-108, 660-674 (1958).
Derivative Type: Dihydrate
Properties: Crystals or powder. Slowly oxidizes in air to CaSO4. Slightly sol in water, alcohol; sol in SO2 solns, acids with liberation of SO2.
Use: Preserving cider and other fruit juices; as disinfectant of brewing vats; antichlor in bleaching textiles; in sugar manuf; in paper pulp cooking; in cement.

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