संस्‍कृतशब्‍दकोशः

संस्‍कृत-हिन्दी-आंग्ल शब्दकोश


English → English

Phthalein — 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.