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Phenolphthalein

Phenolphthalein

CAS : 77-09-8
Molecular Formula : C20H14O4
Formula Weight : 318.32
Description : 
Phenolphthalein is often used in titrations, it turns colorless in acidic solutions and pink in basic solutions. If the concentration of indicator is particularly strong, it can appear purple. In strongly basic solutions, phenolphthalein's pink color undergoes a rather slow fading reaction and becomes colorless again.Phenolphthalein has been used for over a century as a laxative, but is now being removed from over-the-counter laxatives because of concerns over carcinogenicity.

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