Examples of phenolphthalein

• Stimulants, especially phenolphthalein and castor oil, can cause dehydration and electrolyte disturbances in the elderly patient.

• This is, in fact, sold under a variety of names, some of which are antikamnia, ammonol, antitoxin, phenalgin, and phenolphthalein.

• Phenolphthalein is insoluble in water and usually is dissolved in alcohols for use in experiments.

• Several indicators share a similar structure to phenol red, including bromothymol blue, thymol blue, bromocresol purple, thymolphthalein, and phenolphthalein.

• It is closely related to bisacodyl, sodium picosulfate, and phenolphthalein.

• The acid-base indication abilities of phenolphthalein also make it useful for testing for signs of carbonation reactions in concrete.

• This is typically achieved by boiling an alkaline solution of phenolphthalein with powdered zinc, which reduces the phenolphthalein into phenolphthalin.

• Phenolphthalein is used in a test to identify substances that are thought to be, or to contain, blood.