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China, Chinese Laboratory Reagent Phenolphthalein with Fast Delivery CAS No. 77-09-81 Industrial Products Supplier Manufacturer Details, price list catalog:
Chemical ReagentFood AdditiveChemicals Product
Hebei Shanyu Chemical Co., Ltd.
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Product Description Product DescriptionPhenolphthalein 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. Specification 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 PointIt melts at about 260°C-262°C261°C ~262°CIdentificationA:PositiveB:PositiveA:PositiveB:PositiveAppearance of solutionThe solution is clear and not more intensely coloured than reference solution Y7CompliesRelated substancesLess than 0.01%<0.01%Heavy metalsNot more than0.001%<0.0009%Acidity or alkalinityCompliesCompliesChloridesNot more than 0.01%<0.01%SulphatesNot more than 0.02%<0.02%Loss on dryingNot more than 0.5%0.12%Sulphated ashNot more than 0.1%0.01%Assay98.0%-101.0%(C20H14O4)99.6%Storage condition:Store in well closed drums, in cool and dry storage area. Packaging & Shipping Packing & ShippingExhibition
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