Phenolphthalein 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;

CAS: 77-09-8

Purezza: 99%

MF: C20H14O4

What is Phenolphthalein?

Phenolphthalein 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.

Specifica

Articoli	Specifiche
Caratteristiche	Polvere bianca
Identificazione	Un: Positivo B: Positive
Appearance of Solution	La Soluzione È Chiara E Non Più Intensamente Colorati Di Soluzione Di Riferimento Y7
Punto Di Fusione	It melts at about 260℃
Sostanze Correlate	0.5% max
Metalli Pesanti	10ppm max
Acidity or Alkalinity	Conforme
Cloruri	100ppm max
Solfati	200ppm max
Perdita all'Essiccamento	0.5% max
Ceneri solfatate	0.1% max
Dosaggio	98.0-101.0%(C20H14O4)

Applicazione

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