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.

Спецификация

Товары	Технические характеристики
Характеристики	Белый порошок
Идентификация	Ответ: Положительный Б: Положительный
Внешний вид решения	Раствор Прозрачный И окрашен не более интенсивно, чем Эталонный раствор Y7
Температура плавления	Он плавится при температуре около 260 ℃
Родственные вещества	0,5% макс.
Heavy Metals	10 ppm макс.
Кислотность или Щелочность	Соответствует требованиям
Хлориды	макс. 100 ppm
Сульфаты	макс. 200 ppm
Потери при сушке	0,5% макс.
Сульфатированная зола	0,1% макс.
Анализ	98,0-101,0% (C20H14O4)

Применение

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