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Webster 1913 Edition

Disulphuric

Diˊsul-phu′ric

,

Adj.

[Pref.

di-

+

sulphuric

.]

(Chem.)

Applied to an acid having in each molecule two atoms of sulphur in the higher state of oxidation.

Disulphuric acid

,

a thick oily liquid,

H2S2O7

, called also

Nordhausen acid

(from

Nordhausen

in the Harts, where it was originally manufactured),

fuming sulphuric acid

, and especially

pyrosulphuric acid

. See under

.