Phenolphthalein with CAS 77-09-8

CAS:77-09-8
MF:C20H14O4
EINECS:201-004-7

Other Names:Phenolphthalein;alpha.-Di(p-hydroxyphenyl)phthalide;1(3H)-Isobenzofuranone, 3,3-bis(4-hydroxyphenyl)-;1(3H)-Isobenzofuranone,3,3-bis(4-hydroxyphenyl)-;2,2-bis(p-hydroxyphenyl)phthalide;

What is Phenolphthalein with CAS 77-09-8?

Phenolphthalein with CAS 77-09-8 mainly acts on the large intestine, which produces semi-liquid excreta in 4 to 8 hours with little or no colic. The claim that yellow phenolphthalein is three times stronger than white remains unproven. As a result of enterohepatic circulation, the effect of a single dose is sustainable for 3 to 4 days. The drug is an active member of many laxatives that can be sold legally without prescription.

Especificación

Elementos	Specifications
Características	Polvo blanco
Identificación	R: Positivo B: Positivo
Aspecto de la Solución	La Solución Es Clara Y No Con Más Intensidad De Color De La Solución De Referencia Y7
Punto De Fusión	Funde a unos 260℃
Sustancias Relacionadas	0.5% max
Metales Pesados	10ppm max
La acidez o la Alcalinidad	符合
Cloruros	100 ppm max
Sulfatos	200ppm max
Pérdida por Desecación	0.5% max
Cenizas sulfatadas	0.1% max
Ensayo	98.0-101.0%(C20H14O4)

Aplicación

Main uses of phenolphthalein:
1. Pharmaceutical raw materials in the pharmaceutical industry: suitable for habitual and stubborn constipation, available in tablets, suppositories and other dosage forms.
2. Used in organic synthesis: mainly used for synthetic plastics, especially for the synthesis of naphthyridine polyaryl ether ketone polyaryl ether ketone polymers. This type of polymer has excellent heat resistance, water resistance, and chemical resistance. Due to its corrosion resistance, heat aging resistance and good processing and formability, fibers, coatings and composite materials made from it are soon widely used in electronic appliances, mechanical equipment, transportation, aerospace, atomic energy engineering and military fields.
3. Used as acid-base indicator, indicator for titration of non-aqueous solutions, and reagent for chromatographic analysis.

Phenolphthalein-application