In the Kastle-Meyer test, it is used in conjunction with alcohol and hydrogen peroxide to show whether there is blood present.
In the Kastle-Meyer test, it is used in conjunction with alcohol and hydrogen peroxide to show whether there is blood present. Derived from a specific anhydride, this compound was reclassified by the FDA in 1997, indicating that it should no longer be the active ingredient in Petrogalar and Ex-Lax, in which it induced smooth muscle relaxation and diarrhea. It is debated whether or not this compound is carcinogenic, but it is usually produced in an alcohol solution, and in high concentrations of hydroxide, nucleophilic addition can occur, rendering it colorless. FTP, name this frequently-used acid-base indicator, which turns pink between pH 8 and 10.
In the Kastle-Meyer test, it is used in conjunction with alcohol and hydrogen peroxide to show whether there is blood present.
phenolphthalein