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ly and become liquid by attracting and absorbing moisture from the air, as certain salts, acids, and alkalies. In very moist air crystals of strontites deliquesce. Black.

Pertaining to, or derived from, the dolphin; phocenic. Delphinic acid. (Chem.) See Valeric acid, under Valeric. [Obs.]

A disengaging, or removal, of nitric acid.

aporation or distillation; to clear of aqueous matter; to rectify; -- used of spirits and acids.

The operation of separating water from spirits and acids, by evaporation or repeated distillation; -- called also concentration, especially when acids are the subject of it. [Obs.]

ne substance from another by actual or theoretical substitution; as, to derive an organic acid from its corresponding hydrocarbon.

s jar fitted with an air-tight cover, and containing some desiccating agent, as sulphuric acid or calcium chloride, above which is suspended the material to be dried, or preserved from moisture.

Made or derived from oxalic acid; as, desoxalic acid.

s a substitute for gum, for sizing, etc., and obtained from starch by the action of heat, acids, or diastase. It is of somewhat variable composition, containing several carbohydrates which change easily to their respective varieties of sugar. It is so named from its rotating the plane of polarization to the right; -- c…

ing the property of turning the plane of polarized light to the right; as, dextrotartaric acid.

Pertaining to, or derived from, dextrose; as, dextronic acid. Dextronic acid, a sirupy substance obtained by the partial oxidation of various carbohydrates, as dextrose, etc.

se, and hence called invert sugar. Dextrose is chiefly obtained by the action of heat and acids on starch, and hence called also starch sugar. It is also formed from starchy food by the action of the amylolytic ferments of saliva and pancreatic juice.

of lead and oil, and consisting essentially of glycerin mixed with lead salts of the fat acids.

Any compound containing two amido groups united with one or more acid or negative radicals, -- as distinguished from a diamine. Cf. Amido acid, under Amido, and Acid amide, under Amide.

e properties of diastase; effecting the conversion of starch into sugar. The influence of acids and alkalies on the diastatic action of saliva. Lauder Brunton.

Having two acid hydrogen atoms capable of replacement by basic atoms or radicals, in forming salts; bibasic; -- said of acids, as oxalic or sulphuric acids. Cf. Diacid, Bibasic.

Containing two carbon residues, or two carboxyl or radicals; as, oxalic acid is a dicarbonic acid.

A salt of chromic acid containing two equivalents of the acid radical to one of the base; -- called also bichromate.

r equivalent of oxygen to two of a metal; a suboxide. [Obs.] Carbon dioxide. See Carbonic acid, under Carbonic.

process of cleaning or brightening sheet metal or metalware, esp. brass, by dipping it in acids, etc.