strontium sulfate (SrSO4) is the sulfate salt of strontium and occurs naturally as the mineral celestite. It is a white crystalline powder that decomposes on heating to produce toxic and corrosive fumes, including sulfur oxides. It is moderately soluble in dilute hydrochloric acid and nitric acid, slightly soluble in water, and insoluble in ethanol. It is also soluble in alkali chloride solutions.

American Elements produces strontium sulfate in most standard grades when applicable, including Mil Spec (military grade), ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade and USP/EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards. In addition to standard forms, custom compositions are available upon request.

Solubility of strontium sulfate in a sodium chloride brine

The solubility of strontium sulfate, the sulfate salt of the rare earth element, has been investigated by varying the concentrations and temperatures of a sodium chloride brine. The data obtained were fitted to a simple predictive equation, which accurately estimates the solubility of strontium sulfate for any concentration and temperature within the experimental range. The results are useful for evaluating the stability of strontium sulfate solutions and for planning the storage conditions required for the safe handling of the substance.