THYMOLPHTHALEIN COMPLEXON AR
Thymolphthalein is a phthalein dye used as an acid–base (pH) indicator.
Application
Thymolphthalein is a phthalein dye used as an acid–base (pH) indicator. Its transition range is around pH 9.3–10.5. Below this pH, it is colorless; above, it is blue.