- Commodity name： Phenolphthalein
Appearance: A white powder, practically insoluble in water, soluble in alcohol.
- 产品描述
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Chemical Name: Phenolphthalein
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)
Test Item Specification Results Characteristics: A white or almost white powder, practically insoluble in water, soluble in alcohol. A white powder, practically insoluble in water, soluble in alcohol. Melting Point It melts at about 260°C-262°C 261°C ~262°C Identification A:Positive
B:PositiveA:Positive
B:PositiveAppearance of solution The solution is clear and not more intensely coloured than reference solution Y7 Complies Related substances Less than 0.01% <0.01% Heavy metals Not more than0.001% <0.0009% Acidity or alkalinity Complies Complies Chlorides Not more than 0.01% <0.01% Sulphates Not more than 0.02% <0.02% Loss on drying Not more than 0.5% 0.12% Sulphated ash Not more than 0.1% 0.01% Assay 98.0%-101.0%(C20H14O4) 99.6% Storage condition: Store in well closed drums, in cool and dry storage area.
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