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phthalic

[ thal-ik, fthal- ]

/ ˈθæl ɪk, ˈfθæl- /

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adjective Chemistry.

of or derived from phthalic acid.

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Origin of phthalic

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

Words nearby phthalic

Phryne, PHS, PHSE, phthalate, phthalein, phthalic, phthalic acid, phthalic anhydride, phthalin, phthalocyanine, phthalocyanine blue

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use phthalic in a sentence

Thus the dinitronaphthol described as Manchester yellow, if heated for some time with dilute nitric acid, furnishes phthalic acid.
Coal|Raphael Meldola
The phthaleïn formed from gallic acid and phthalic anhydride really results from the union of the latter with pyrogallol.
Coal|Raphael Meldola
Phthalic acid, which was discovered in 1836 by Laurent, is a product of the oxidation of many benzenoid compounds.
Coal|Raphael Meldola
Three isomeric phthalic acids are known, but only one of these is of use in the present branch of manufacture.
Coal|Raphael Meldola

It condenses with phthalic anhydride to form rhodamine, and with succinic anhydride to rhodamine S.
Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3|Various