pyrosulphuric

HYPHEN

py=ro=sul=phu=ric

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CIDE DICTIONARY

pyrosulphuric, a. [Pyro- + -sulphuric.].

Pertaining to, or designating, an acid called also disulphuric acid) obtained by distillation of certain sulphates, as a colorless, thick, oily liquid, H2S2O7 resembling sulphuric acid. It is used in the solution of indigo, in the manufacture of alizarin, and in dehydration. [1913 Webster]

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