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ding to remove or separate water; eliminating water. Hydrolytic agents, such as sulphuric acid or caustic alkali. Encyc. Brit. Hydrolitic ferment (Physiol. Chem.), a ferment, enzyme, or chemical ferment, which acts only in the presence of water, and which causes the substance acted upon to take up a molecule of water.…

A white crystalline substance, C6H4(OH)2, obtained by the reduction of quinone. It is a diacid phenol, resembling, and metameric with, pyrocatechin and resorcin. Called also dihydroxy benzene.

A salt supposed to be formed by a hydracid and a base.

Pertaining to, or designating, an acid obtained from sorbic acid when this takes up hydrogen; as, hydrosorbic acid.

A saline compound of hydrosulphurous acid and a base. [R.]

Pertaining to, or derived from, hydrogen and sulphur; as, hydrosulphuricacid, a designation applied to the solution of hydrogen sulphide in water.

Pertaining to, or designating, an acid obtained by the reduction of sulphurous acid. See Hyposulphurous acid, under Hyposulphurous.

A salt formed by the union of hydrotelluric acid and the base.

Formed by hydrogen and tellurium; as, hydrotelluric acid, or hydrogen telluride.

A combining form, also used adjectively, indicating hydroxyl as an ingredient. Hydroxy acid (Chem.), an organic acid, having (besides the hydroxyl group of the carboxyl radical) an alcoholic hydroxyl group, and thus having the qualities of an alcohol in addition to its acid properties; as, lactic and tartaric acids are…

and one of oxygen. It is a characteristic part of the hydrates, the alcohols, the oxygen acids, etc.

organic base, NH2.OH, resembling ammonia, and produced by a modified reduction of nitric acid. It is usually obtained as a volatile, unstable solution in water. It acts as a strong reducing agent.

Having an excessive proportion of carbonic acid; -- said of bicarbonates or acid carbonates. [Written also hypercarburetted.]

Perchloric; as, hyperoxymuriatic acid. [Obs.]

tate of oxidization, usually the lowest, into the compounds indicated; as, hyposulphurous acid.

A salt of hypochlorous acid; as, a calcium hypochloride.

or derived from, chlorine having a valence lower than in chlorous compounds. Hypochlorous acid (Chem.), an acid derived from chlorine, not known in a pure state, but forming various salts, called hypochlorites.

Pertaining to, or obtained from, the peanut, or earthnut (Arachis hypogæa). Hypogæic acid (Chem.), an acid in the oil of the earthnut, in which it exists as a glyceride, and from which it is extracted as a white, crystalline substance.

A salt of hyponitrous acid.

ng or derived from nitrogen having a lower valence than in nitrous compounds. Hyponitrous acid (Chem.), an unstable nitrogen acid, NOH, whose salts are produced by reduction of the nitrates, although the acid itself is not isolated in the free state except as a solution in water; -- called also nitrosylic acid.…