| phthalic | <chemistry> Pertaining to, or designating, a dibasic acid obtained by the oxidation of naphthalene and allied substances. <chemistry> Phthalic acid, a white crystalline substance, C6H4.(CO2H)2, analogous to benzoic acid, and employed in the brilliant dyestuffs called the phthaleins. Origin: Naphthalene + -ic. Source: Websters Dictionary (01 Mar 1998) |
|---|---|
| phthalic acid | O-Benzenedicarboxylic acid;c6H4(COOH)2. (05 Mar 2000) |
| phthalic acids | A group of compounds that has the general structure of a dicarboxylic acid-substituted benzene ring. The ortho-isomer is used in dye manufacture. (12 Dec 1998) |
| phthalic anhydrides | Phthalic acid anhydrides. Can be substituted on any carbon atom. Used extensively in industry and as a reagent in the acylation of amino- and hydroxyl groups. (12 Dec 1998) |
| resorcinol phthalic anhydride | <chemical> Fluorophore commonly used in microscopy. Fluorescein di acetate can be used as a vital stain or can be conjugated to proteins (particularly antibodies) using isothiocyanate. Excitation is at 365nm and the emitted light is green yellow (450-490nm). The emission spectrum is pH sensitive and fluorescein can therefore be used to measure pH in intracellular compartments. (18 Nov 1997) |
|---|