Calcium Sulfide

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calcium sulfide

[′kal·se·əm ′səl‚fīd]
(inorganic chemistry)
CaS In pure form, white cubic crystals, slightly soluble in water; used as a base for luminescent materials. Also known as hepar calcies; sulfurated lime.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Calcium Sulfide


CaS, a salt; colorless crystals with a density of 2.58 g/cm3 and a melting point of 2000°C. Calcium sulfide is obtained by the calcination of CaSO4 with charcoal. It is used in the preparation of luminophors and in the tanning industry for the removal of hair from hides. Calcium hydrosulfide Ca(SH) 2 is used in the production of synthetic fibers.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
It would be possible to obtain the product boric acid in high purity because the by-product formed in the reaction (The calcium sulfide solubility is considered to be 0.0043 g in 100 mL of water at 18AdegC) will remain in solid waste.
Geochemists studying the samples found abundant bits of the mineral oldhamite (calcium sulfide), so touchy that it decomposes after the slightest exposure to water vapor.
* Hepar sulphuris (Calcium sulfide): Excruciatingly painful eruptions.
The idea in BLG is that sulfur in the product gas would combine with solid calcium mid magnesium to form calcium sulfide (CaS) and magnesium sulfide (MgS).