Description
Phenolphthalein
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.
