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单词 trihydrate
释义 trihydrate Chem.|traɪˈhaɪdrət|
[f. tri- 5 a + hydrate.]
A compound containing three molecules of water combined with an element or radical or with another compound; also, a compound containing three hydroxyl groups, OH, united to an element or radical; e.g. bismuth trihydrate, which may be regarded as Bi2O3, 3H2O or as Bi(OH)3. So trihydrated a., combined with three molecules of water.
1854Scoffern in Orr's Circ. Sc., Chem. 374 A crystallized trihydrate of phosphoric acid results.1868Watts Dict. Chem. IV. 83 Nitrates..Copper also forms a trihydrated salt, Cu{pp}N2O6.3H2O.1873Fownes' Chem. (ed. 11) 391 The trihydrate is the ordinary gelatinous precipitate obtained by treating solutions of aluminium salts.1888Muir & Morley Watts' Dict. Chem. I. 145 Aluminium..Trihydrate... Occurs native, in hexagonal fibrous crystals, as gibbsite, and hydrargyllite.
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