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barium sulphate

noun

  1. a white insoluble fine dense powder, used as a pigment, as a filler for paper, rubber, etc, and in barium meals. Formula: BaSO 4 Also calledblanc fixe
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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Example Sentences

But a University of Chile laboratory study concluded that some are only 20% rubber, with the rest made up of barium sulphate, silica and lead.

Lithopone, probably the whitest of pigments, results from the double decomposition of zinc sulphate and barium sulphide, thereby forming a molecular combination of zinc sulphide and barium sulphate.

To the filtrate ammonia is added, and then barium chloride, which precipitates the sulphur as barium sulphate.

The water will pass into a series of tanks, where it will mix with reagents such as nickel ferro­cyanide and barium sulphate, along with polymers and sand.

From Nature

Artificially-prepared barium sulphate is used as a pigment, Permanent White, also in the paper industry and in vulcanizing rubber.

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barium sulfidebarium thiosulfate