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99% High Purity and Top Quality Phenolphthalein With reasonable price and fast delivery 77-09-8 Product Description 0.jpg Specifciation: 1.Competitive price 2.Fast Delivery Within 2 days 3.SGS , BV, GMP,ISO approve 4.Professional factory 3.jpg Product Name: Phenolphthalein 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 Appearance: white powder Melting Point: 258-263ºC Density: 1.299 g/cm3 Solubility: <0.1 g/100ml Stability: stable under ordinary conditions Real Shot 4.jpg Phenolphthalein (7).jpgPhenolphthalein (8).jpg Functions 10.jpg Pharmaceutical raw materials for pharmaceutical industry: suitable for habitual obstinate constipation, including tablet, suppository and other dosage forms. Used for organic synthesis: mainly used in synthetic plastics, in particular the synthesis of diazo - naphthyl ether ketone polyether ketone polymers. The fibers, coatings and composite materials made from it are widely used in electronics, mechanical equipment, transportation, aerospace, atomic energy engineering and military. Used for acid base indicator, non-aqueous solution titration indicator, color layer analytical reagent. Analysis 5.jpg Items Standards Results Characteristics A white or almost white powder ,practically insoluble in water ,soluble in alcohol Conform Melting temperature ≥260℃ 260.5℃~262.6℃ Identification A Positive B Positive A Positive B Positive Appearance of solution The solution is clear and not more intensely coloured than reference solution Y7 Complies Related substances Less than 0.5% < 0.5% Heavy metals ≤10ppm <10ppm Arsenic ≤8ppm <8ppm Acidity or Alkalinity Complies Complies Chlorides ≤100ppm <100ppm Sulphates ≤200ppm <200ppm Organic volatile impurities pass pass Chromatographic impurities ≤1.0% <1.0% Fluoran To pass test Complies Loss on drying ≤0.50% 0.10% Sulphated ash (Residue on ignition) ≤0.10% 0.02% Assay 98.0%~101.0% (C20H14O4) 99.8% Remark Storage condition: Well closed container, store protected from light Conclusion It comply with BP2009 and USP23