phthalic

[ thal-ik, fthal- ]

adjective

, Chemistry.

1. of or derived from phthalic acid.

Word History and Origins

Origin of phthalic¹

First recorded in 1855–60; (na)phthal(ene) + -ic

Example Sentences

Thus the dinitronaphthol described as Manchester yellow, if heated for some time with dilute nitric acid, furnishes phthalic acid.

From Project Gutenberg

The phthaleïn formed from gallic acid and phthalic anhydride really results from the union of the latter with pyrogallol.

From Project Gutenberg

Phthalic acid, which was discovered in 1836 by Laurent, is a product of the oxidation of many benzenoid compounds.

From Project Gutenberg

Three isomeric phthalic acids are known, but only one of these is of use in the present branch of manufacture.

From Project Gutenberg

It condenses with phthalic anhydride to form rhodamine, and with succinic anhydride to rhodamine S.

From Project Gutenberg