Calcium Sulfate - Research Article from Chemical Compounds

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Calcium Sulfate

Overview

Calcium sulfate (KAL-see-um SUL-fate) occurs in three forms:

  • anhydrous calcium sulfate (CaSO4); the anhydrous form of calcium sulfate is available in two forms, known as insoluble anhydrite and soluble anhydrite;
  • calcium sulfate dihydrate (CaSO4·2H2O), also known as mineral white, terra alba, light spar, precipitated calcium sulfate, native calcium sulfate, and by other names;
  • calcium sulfate hemihydrate (CaSO4·1/2H2O), also known as plaster of Paris and dried gypsum;

Key Facts

Other Names:

Anhydrous gypsum; also see Overview for synonyms of hydrates

Formula:

CaSO4

Elements:

Calcium, sulfur, oxygen

Compound Type:

Salt (inorganic)

State:

Solid

Molecular Weight:

136.14 g/mol

Melting Point:

1460°C (2660°F)

Boiling Point:

Not applicable

Solubility:

Insoluble in water and most organic solvents

The physical properties of the three forms of calcium sulfate differ somewhat from each other, but their chemical properties are essentially the...

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This section contains 1,085 words
(approx. 4 pages at 300 words per page)
Buy the Calcium Sulfate Encyclopedia Article
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Chemical Compounds
Calcium Sulfate from Chemical Compounds. ©2008 by U•X•L. U•X•L is an imprint of Thomson Gale, a division of Thomson Learning, Inc. All rights reserved.
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