phenolphthalein cas 77-09-8

描述

Phenolphthalein Quick Details

Chemical Name: Phenolphthalein

CAS No.: 77-09-8

Molecular Fomula: C20H14O4

Chemical Structure:

Molecular weight: 318.32

Appearance: A white powder, practically insoluble in water, soluble in alcohol.

Assay: 98.0%-101.0%(C2OHi4O4)

Phenolphthalein Typical Properties

Item	Specifications
Characteristics	A white or almost white powder, practically insoluble in water, soluble in alcohol.
Melting Point	It melts at about 260℃
Identification	A：Positive B：Positive
Appearance of solution	The solution is clear and not more intensely coloured than reference solution Y7
Related substances	Less than 0.5%
Heavy metals	Not more than0.001%
Acidity or alkalinity	Complies
Chlorides	Not more than 0.01%
Sulphates	Not more than 0.02%
Loss on drying	Not more than 0.5%
Sulphated ash	Not more than 0.1%
Assay	98.0%-101.0%(C2OHi4O4)
Microorganism	TPC<1000cfu/g
	Y and M <100cfu/g
	E-coli – absent
	Staphylococcus Aureus-Absent
	Pseudomonas Aeruginosa-Absent
	Albicans Saccharomyces-Absent

Phenolphthalein Usage

(1) This product is a commonly used acid indicator, and the color change range is pH 8.2 (colorless) -10.0 (red). Phenolphthalein is also a drug that acts as a laxative in the colon and is used to treat constipation.

(2) Acid-base indicator, non-aqueous titration indicator, chromatographic reagent.

PhenolphthaleinPackaging and Shipping

Fiber Drum,25kg

PhenolphthaleinStorage

Store in a cool, dry place.