Phenolphthalein with CAS 77-09-8

CAS:77-09-8
HÌNH C20H14O4
PHÂN: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.

Đặc điểm kỹ thuật

Mục	Kỹ thuật
Đặc	Bột trắng
Nhận dạng	Một: Tích Cực B: Tích Cực
Sự xuất hiện của Giải pháp	Giải Pháp Là Rõ Ràng Và Không Mạnh Mẽ Hơn Màu Hơn Tài Liệu Tham Khảo Giải Pháp Lớp 7
Điểm Nóng Chảy	Nó tan chảy vào khoảng 260 độ
Liên Quan Chất	0.5% max
Kim Loại Nặng	10ppm max
Axit hoặc Kiềm	Phù hợp
Clorua	100 trang mỗi phút max
Sunfat	200ppm max
Mất trên làm Khô	0.5% max
Sulphated ash	0.1% max
Xét nghiệm	98.0-101.0%(C20H14O4)

Ứng dụng

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