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Pharmaceutical Chemical 99% Phenolphthalein/Phenothalin CAS No 77-09-8

Product Details

Product Details

Product Description

Product Description
Chaoyang GreatAP Chemicals Co.,Ltd.
Product Description
Phenolphthalein appears as white or yellowish-white to pale orange fine crystalline powder. Odorless. Aqueous solution is acidic. Colorless to pH 8.5; pink to deep-red above pH 9. Colorless in presence of large amounts of alkali. Tasteless.Phenolphthalein is an organic compound used as a laboratory reagent and pH indicator. Phenolphthalein exerts laxative effects by stimulating the intestinal mucosa and constricting smooth muscles. However, phenolphthalein is no longer used as a laxative due to the suspected carcinogenicity of this compound.
Phenolphthalein 99% CAS 77-09-8 Speciticaiton :
ItemSpecifications
CharacteristicsA white or almost white powder, practically insoluble in water, soluble in alcohol.
Melting PointIt melts at about 260ÂșC
IdentificationA:Positive B:Positive
Appearance of solutionThe solution is clear and not more intensely coloured than reference solution Y7
Related substancesLess than 0.5%
Heavy metalsNot more than0.001%
Acidity or alkalinityComplies
ChloridesNot more than 0.01%
SulphatesNot more than 0.02%
Loss on dryingNot more than 0.5%
Sulphated ashNot more than 0.1%
Assay98.0%-101.0%(C2OHi4O4)
MicroorganismTPC<1000cfu/g
Y and M <100cfu/g
E-coli - absent
Staphylococcus Aureus-Absent
Pseudomonas Aeruginosa-Absent
Albicans Saccharomyces-Absent

Phenolphthalein 99% CAS 77-09-8 Application :
This product is a commonly used acid indicator, and the color change range is pH 8.2 (colorless) -10.0 (red).
Phenolphthalein is one of the most widely used indicators. Phenolphthalein is used as a laxative to treat incomplete and infrequent bowel movement.
Phenolphthalein also is used in automotive and aviation industries.
USUAL PACKAGE: 25kg net paper drum
SHELF LIFE: Three Years

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