PHTHALEIN
\fθˈe͡ɪliːn], \fθˈeɪliːn], \f_θ_ˈeɪ_l_iː_n]\
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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.
By Oddity Software
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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.
By Noah Webster.
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thal'e-in, n. one of a very important class of dye-yielding materials formed by the union of phenols with the anhydride of phthalic acid.--adj. PHTHAL'IC, pertaining to naphthalene.--n. PHTHAL'IN, a colourless crystalline compound obtained by reducing phthalein.
By Thomas Davidson