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phthalein
phthal·ein also phthal·eine P0271800 (thăl′ēn′, thăl′ē-ĭn, thā′lēn′, thā′lē-ĭn, fthăl′-)n. Any of a group of chemical compounds formed by a reaction of phthalic anhydride with a phenol, from which certain synthetic dyes are derived.
[phthal(ic) + -ein.]phthalein (ˈθeɪliːn; -lɪɪn; ˈθæl-; ˈfθæl-) n (Elements & Compounds) any of a class of organic compounds obtained by the reaction of phthalic anhydride with a phenol and used in dyes[C19: from phthal-, shortened form of naphthalene +-in]phthal•ein (ˈθæl in, -i ɪn, ˈfθæl-)
n. any of a group of compounds formed by treating phthalic anhydride with phenols, from which certain important dyes are derived. [1900–05; (na) phthale (ne) + -in1]
EncyclopediaSeephenolphthaleinphthalein
phthal·e·in (thal'ē-in), One of a group of highly colored compounds based on a triphenylmethyl base; for example, phenolphthalein. |