calcium metasilicate

[met-uh-sil-i-kit, -keyt]

Phonetic (Standard)IPA

noun

a white powder, CaSiO 3 , insoluble in water, used as an antacid and as a filler for paper.

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Calcium metasilicate, CaSiO3, occurs in nature as monoclinic crystals known as tabular spar or wollastonite; it may be prepared artificially from solutions of calcium chloride and sodium silicate.