Phenolphtalein ACS, 250 g

A white / almost white powder

Assay 98.0 - 101.0%

Identification Conforms,Loss on dry. < 0.5%,Ash (SO4) < 0.1%,Acid. or alk. Conforms,Cl-< 0.01%,Thickness (DIN 53105) Conforms,App. of sol. Conforms,Heavy met. < 0.001%

Related subst. < 0.5%,SO4 < 0.02%,Thermal resistance,Transition range pH 8.2 - 10,colourless to red-violet,Practically insoluble in water