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cal hydrocarbon, C5H10, metameric with the amylenes, and the nucleus of a large number of derivatives; -- so named because regarded as composed of five methylene residues. Cf. Trimethylene, and Tetramethylene.

The hypothetical radical, C5H11, of pentane and certain of its derivatives. Same as Amyl.

Any one of the series of hydroxyl derivatives of which phenol proper is the type. Glacial phenol (Chem.), pure crystallized phenol or carbolic acid. -- Phenol acid (Chem.), any one of a series of compounds which are at once derivatives of both phenol and some member of the fatty acid series; thus, salicylic acid is a…

arded as the essential residue of benzene, and the basis of an immense number of aromatic derivatives. Phenyl hydrate (Chem.), phenol or carbolic acid. -- Phenyl hydrazine (Chem.), a nitrogenous base (C6H5.N2H3) produced artificially as a colorless oil which unites with acids, ketones, etc., to form well-crystallized…

A hypothetic radical (C6H4) occurring in certain derivatives of benzene; as, phenylene diamine.

A basic amido derivative of phloroglucin, having an astringent taste.

A yellow crystalline substance, having a geraniumlike odor, regarded as a complex derivative of acetone, and obtained from certain camphor compounds.

Pertaining to, or designating, certain derivatives of phosphorous acid containing a hydrocarbon radical, and analogous to the sulphonic acid.

e hypothetical radical PH4, analogous to ammonium, and regarded as the nucleus of certain derivatives of phosphine.

An imido derivative of phthalic acid, obtained as a white crystalline substance, C6H4.(CO)2NH, which has itself (like succinimide) acid properties, and forms a series of salts. Cf. Imido acid, under Imido.

rocarbon extracted from the creosote of beechwood tar. It consists essentially of certain derivatives of pyrogallol.

A hydrocarbon obtained by decomposition of certain piperidine derivatives.

d tertiary alcohols. -- Primary amine (Chem.), an amine containing the amido group, or a derivative of ammonia in which only one atom of hydrogen has been replaced by a basic radical; -- distinguished from secondary and tertiary amines. -- Primary amputation (Surg.), an amputation for injury performed as soon as the…

is of the same literal denomination as the fundamental base of the harmony; -- opposed to derivative. Moore (Encyc. of Music). -- Primitive circle (Spherical Projection), the circle cut from the sphere to be projected, by the primitive plane. -- Primitive colors (Paint.), primary colors. See under Color. -- Primitiv…

Primarily; not derivatively.

ocarbon radical, CH3.CH2.CH, analogous to ethylidene, and regarded as the type of certain derivatives of propane; -- called also propylidene.

stilling piperazine with zinc dust, and in other ways. Also, by extension, any of various derivatives of the same.

ms designating fire or heat; specifically (Chem.), used to imply an actual or theoretical derivative by the action of heat; as in pyrophosphoric, pyrosulphuric, pyrotartaric, pyrotungstic, etc.

having on odor like that of chloroform. It is the nucleus and origin of a large number of derivatives. So called because it colors a splinter of wood moistened with hydrochloric acid a deep red.

.CH3, first obtained as a condensation product of aldehyde and aniline, and regarded as a derivative of quinoline; -- called also methyl quinoline. [Written also chinaldine.]