Definitions for phthaleinˈθæl in, -i ɪn, ˈfθæl-

This page provides all possible meanings and translations of the word phthalein

Random House Webster's College Dictionary

phthal•einˈθæl in, -i ɪn, ˈfθæl-(n.)

  1. any of a group of compounds formed by treating phthalic anhydride with phenols, from which certain important dyes are derived.

    Category: Chemistry

Origin of phthalein:

1900–05; (na )phthale (ne ) + -in1


  1. phthalein(Noun)

    any of a range of lactones formed by the reaction of phenols with phthalic anhydride

Webster Dictionary

  1. Phthalein(noun)

    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


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