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Cas 77-09-8

  • Ensince Industry

CAS No.: 77-09-8

Molecular Fomula: C20H14O4

Molecular weight: 318.32

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

Assay: 98.0%-101.0%(C2OHi4O4)

Typical Properties

CharacteristicsA white or almost white powder, practically insoluble in water, soluble in alcohol.
Melting PointIt melts at about 260℃
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%
Y and M <100cfu/g
E-coli – absent
Staphylococcus Aureus-Absent
Pseudomonas Aeruginosa-Absent
Albicans Saccharomyces-Absent


(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.

Packaging and Shipping

Fiber Drum,25kg


Store in a cool, dry place.