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.

规格

项目	规格
特点	白色的粉末
识别	A:正 B：正
外观的解决方案	该方案是清楚的并不是更强烈的颜色比基准解决方案Y7
熔点	它融化在约260℃
有关的物质	0.5%max
重金属	10ppm max
酸碱度	符合
氯化物	100ppm的最大
硫酸盐	200ppm max
干燥损失	0.5%max
硫酸盐灰	0.1%max
测定	98.0-101.0%(C20H14O4)

应用

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