The Ricca Chemical phenolphthalein TS/RS with a composition of 94.05% ethyl alcohol, 4.70% methyl alcohol and 1.25% phenolphthalein, is suitable for use in medical applications. It can be used as a reductometric standard in titrations. It can be stored at a temperature of 15 to 30 degree C.

Phenolphthalein Indicator, 1% (w/v) in 95% (v/v) Alcohol, Neutralized

The Ricca Chemical phenolphthalein indicator is composed of 55.5% water, 41.76% ethyl alcohol, 2.09% methyl alcohol, 0.56% phenolphthalein and