Barium oxide
baryta (def 1).
historical examples
barium oxide is not often used and soda cannot be used in raw glazes because there is no convenient substance which contains it.
the potter’s craft charles f. binns
by digesting caustic baryta, or barium oxide, with a little water, or igniting gently the crystallised hydrate.
cooley’s cyclopdia of practical receipts and collateral information in the arts, manufactures, professions, and trades…, sixth edition, volume i arnold cooley
barium oxide is manufactured in quant-ty for the preparation of barium dioxide (bao2), from which oxygen was at one time obtained.
the new gresham encyclopedia. vol. 1 part 3 various
noun
a white or yellowish-white poisonous heavy powder used esp as a dehydrating agent. formula: bao also called baryta
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