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Fluorescein :: Fluorescein (n.) A yellowish red, crystalline substance, C20H12O5, produced by heating together phthalic anhydride and resorcin; -- so called, from the very brilliant yellowish green fluorescence of its alkaline solutions. It has acid properties, and its salts of the alkalies are known to the trade under the name of uranin..

Gallein :: Gallein (n.) A red crystalline dyestuff, obtained by heating together pyrogallic and phthalic acids..

Phthalimide :: Phthalimide (n.) 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..

Terephthalate :: Terephthalate (n.) A salt of terephthalic acid.

Phthalein :: Phthalein (n.) One of a series of artificial organic dyes made as condensation products of the phenols with phthalic acid, and well represented by phenol phthalein. Their alkaline solutions are fluorescent..

Naphthalate :: Naphthalate (n.) A salt of naphthalic acid; a phthalate.

Naphthalic :: Naphthalic (a.) Formerly, designating an acid probably identical with phthalic acid..

Naphthalic :: Naphthalic (a.) Pertaining to, derived from, or related to, naphthalene; -- used specifically to denote any one of a series of acids derived from naphthalene, and called naphthalene acids..

Phthalyl :: Phthalyl (n.) The hypothetical radical of phthalic acid.

Terephthalic :: Terephthalic (a.) Of, pertaining to, or designating, a dibasic acid of the aromatic series, metameric with phthalic acid, and obtained, as a tasteless white crystalline powder, by the oxidation of oil of turpentine; -- called also paraphthalic acid. Cf. Phthalic..

Phthalic :: Phthalic (a.) Pertaining to, or designating, a dibasic acid obtained by the oxidation of naphthalene and allied substances..

Phthalate :: Phthalate (n.) A salt of phthalic acid.

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