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strontium carbonate


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A white solid, SrCO3; orthorhombic; r.d. 3.7; decomposes at 1340°C. It occurs naturally as the mineral strontianite and is prepared industrially by boiling celestine (strontium sulphate) with ammonium carbonate. It can also be prepared by passing carbon dioxide over strontium oxide or hydroxide or by passing the gas through a solution of strontium salt. It is a phosphor, used to coat the glass of cathode-ray screens, and is also used in the refining of sugar, as a slagging agent in certain metal furnaces, and to provide a red flame in fireworks.

Subjects: Chemistry.


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