Strontium sulfate

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White crystals that occur in nature as the mineral Celestite. Strontium sulfate was used occasionally as a white artist pigment in England in the early 19th century. It was soon replaced by Barium sulfate. Currently strontium sulfate is used as a red colorant in pyrotechnics, ceramics, and Glass.

Synonyms and Related Terms

strontium white; strontium sulphate (Br.); sulfato de estroncio (Esp.); sulfate de strontium (Fr.); sulfato de estrôncio (Port.); celestite



Physical and Chemical Properties

Slightly soluble in concentrated acids and water. Insoluble in ethanol and dilute sulfuric acid.

Composition SrSO4
CAS 7759-02-6
Melting Point 1605 C
Density 3.71-3.97 g/ml
Molecular Weight mol. wt. = 183.68

Resources and Citations

  • Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 9013