Phenolphthalien

Package:25KG/fibre drum Pharmacy grade BP2009 / EP6 Appearance White powder Assay 98.0% -101.0% Melting point 260’C min. Identification Positive Acidity or alkaline Pass Solution appearance Pass Related substances 0.5% max Chloride 100ppm Max Sulfate 200ppm Max Heavy metals 10ppm Max Loss on drying 0.5% max. Sulfate ash 0.1% max Reagent grade Appearance White powder PH transition interval 8.0(colorless)-10 (dark purple-red) Mass-absorption coefficient (L/cm.g) 68.5-75.0 Ethanol soluble test Qualified Residue on ignition ( as sulfate) 0.05% min. Loss on drying 1.0% min

CAS NO:77-09-8

EC NO:201-004-7

Molecular Formula:C₂₀H₁₄O₄

Molecular Weight:318.3287

Synonyms:;Phenolphthalein solution;3,3-bis(p-hydroxyphenyl)phthalide;,3-bis(4-hydroxyphenyl)-1(3H)-isobenzofuranore;3,3-bis(4-hydroxyphenyl)-2-benzofuran-1(3H)-one;2-[bis(4-hydroxyphenyl)methyl]benzoic acid;Phenolphthalien;

Molecular Structure: