FENOLFTALEÍNA PA ACS MERCK - (EMB. 25gr)

Identity UV/VIS-Spectrum passes test Clarity of the alkoholic solution 10 g/l ethanol Clear to not more than a faint trace of turbidity or insoluble matter should remain. Absorption maximum lambda max buffer pH 9.8 551 - 554 nm Spec. Absorptivity A 1%/1cm lambdamax; 0.01 g/l; buffer pH 9.8; calculated on anhydrous substance 700 - 750 Transition range according to ACS passes test Transition range pH 8.2 - pH 9.8 Clourless - red-violet Loss on drying 110 °C <= 1 % Product information Grade ACS,Reag. Ph Eur Hill Formula C20H14O4 Chemical and physical data Solubility 3.36 mg/l (20 °C) Melting point 263.7 °C Molar mass 318.32 g/mol Density 1.296 g/cm3 (20 °C)