Page 196 - Chemical and process design handbook

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CALCIUM SULFIDE

Calcium sulfide is made by reducing calcium sulfate with coke.

CaSO + 2C → CaS + 2CO
4 2
Calcium sulfide is used as a depilatory in the tanning industry and in
cosmetics and, in a finely divided form, it is employed in luminous paints.
Calcium polysulfides (CaS ), such as calcium disulfide (CaS ) and calcium
n 2
pentasulfide (CaS ), are made by heating sulfur and calcium hydroxide.
5
Ca(OH) + S → CaS + H O + SO
2 n 2 x
The calcium polysulfides are used as fungicides.

See Calcium Sulfate.

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