Phenolphthalein CAS 77-09-8

CAS: 77-09-8
Molecular Formula: C20H14O4
Molecular Weight: 318.32
EINECS: 201-004-7
Storage Period: 1 year

Synonym: 1(3H)-Isobenzofuranone,3,3-bis(4-hydroxyphenyl)-; 1(3H)-Isobenzofuranone,3,3-bis(4-hydroxyphenyl)-; 2,2-bis(p-hydroxyphenyl)phthalide; 3,3-bis(4-Chemicalbookhydroxyphenyl)-1(3h)-isobenzofuranon; alpha-(p-hydroxyphenyl)-alpha-(4-oxo-2,5-cyclohexadien-1-ylidine)-o-toluicacid; alpha-di-(p-hydroxyphenyl)phthalide; alpha-di(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.

Spécification

Les éléments	Spécifications
Caractéristiques	De la poudre blanche
Identification	Un: Positif B: Positif
Aspect de la Solution	La Solution Est Claire Et Pas Plus Colorées Que La Solution De Référence Y7
Point De Fusion	Elle fond à environ 260℃
Substances Apparentées	0.5% max
Les Métaux Lourds	10 ppm max
L'acidité ou de l'Alcalinité	Conforme
Les chlorures	100ppm max
Les sulfates	200 ppm max
Perte sur le Séchage	0.5% max
Cendres sulfatées	0.1% max
Dosage	98.0-101.0%(C20H14O4)

Application

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 CAS 77-09-8-application