barium sulphate

British  

noun

1. Also called: blanc fixe.  a white insoluble fine dense powder, used as a pigment, as a filler for paper, rubber, etc, and in barium meals. Formula: BaSO 4

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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.

From The Guardian

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.

From Project Gutenberg

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

From Project Gutenberg

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.

From Project Gutenberg