Definition of Phthalein. Meaning of Phthalein. Synonyms of Phthalein

Here you will find one or more explanations in English for the word Phthalein. Also in the bottom left of the page several parts of wikipedia pages related to the word Phthalein and, of course, Phthalein synonyms and on the right images related to the word Phthalein.

Definition of Phthalein

Phthalein
Phthalein Phthal"e*in, n. [See Phthalic.] (Chem.) One of a series of artificial organic dyes made as condensation products of the phenols with phthalic acid, and well represented by phenol phthale["i]n. Their alkaline solutions are fluorescent. Phenol phthalein, a white or yellowish white crystalline substance made from phthalic acid and phenol. Its solution in alkalies is brilliant red, but is decolorized by acids, and as this reaction is exceedingly delicate it is used as an indicator.

Meaning of Phthalein from wikipedia

- Phthalein dyes are a class of dyes mainly used as pH indicators, due to their ability to change colors depending on pH. They are formed by the reaction...
- Thymolphthalein is a phthalein dye used as an acid–base (pH) indicator. Its transition range is around pH 9.3–10.5. Below this pH, it is colorless; above...
- Bromothymol blue (also known as bromothymol sulfone phthalein and BTB) is a pH indicator. It is mostly used in applications that require measuring substances...
- and pink in basic solutions. It belongs to the class of dyes known as phthalein dyes. Phenolphthalein is slightly soluble in water and usually is dissolved...
- Bromsulfthalein (also known as bromsulphthalein, bromosulfophthalein, and BSP) is a phthalein dye used in liver function tests. Determining the rate of removal of the...
- o-Cresolphthalein is a phthalein dye used as a pH indicator in titrations. It is insoluble in water but soluble in ethanol. Its solution is colourless...
- with acid and base, and thus serve as pH indicators. Zelyonka attack Phthalein dye Wikimedia Commons has media related to Triarylmethane dyes. Gessner...
- α-Naphtholphthalein (C28H18O4) is a phthalein dye used as a pH indicator with a visual transition from colorless/reddish to greenish blue at pH 7.3–8...
- amide Lactim, a cyclic imide Lactide, a cyclic diester Halolactonization Phthalein "lactones", Compendium of Chemical Terminology, 2.3.3, International Union...
- synthesis and description of the plant dye indigo, the discovery of the phthalein dyes, and the investigation of polyacetylenes, oxonium salts, nitroso...