Phenolphthalein powder ACS

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Description

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Phenolphthalein

Identification

Synonyms 2-[Bis(4-hydroxyphenyl)methyl]benzoic acid; 3,3-Bis(4-hydroxyphenyl)-1(3H)-isobenzofuranone; 3,3-Bis(4-hydroxyphenyl)phthalide

Molecular Formula C20H14O4

Molecular Weight 318.33

CAS Number 77-09-8

EINECS/ELINCS 201-004-7

Properties

Appearance white powder

Melting Point258-263ºC

Density 1.299 g/cm3

Solubility <0.1 g/100ml

Stability stable under ordinary conditions

Specification

Items	Specifications
Characteristics	White powder
Identification	A: Positive B: Positive
Appearance of Solution	The Solution Is Clear And Not More Intensely Coloured Than Reference Solution Y7
Melting Point	It melts at about 260℃
Related Substances	0.5% max
Heavy metals	10ppm max
Acidity or Alkalinity	Complies
Chlorides	100ppm max
Sulphates	200ppm max
Loss on Drying	0.5% max
Sulphated ash	0.1% max
Assay	98.0-101.0%(C20H14O4)

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