What is another word for phenolphthalein?
Pronunciation: [fˈɛnəlfθˌe͡ɪliːn] (IPA) 
Phenolphthalein is a common laboratory chemical that is often used as an acid-base indicator. It changes color depending on the pH of the solution; pink in basic or alkaline solutions and colorless in acidic solutions. Some other synonyms of phenolphthalein include D&C Red No. 28, phenolphthalin, phthalein purple, and 3,3-bis(4-hydroxyphenyl)-1(3H)-isobenzofuranone. This compound is also used as a laxative, and it can be found in over-the-counter medications. Phenolphthalein is also used in the manufacturing of plastics, and it is a key component in the synthesis of certain chemicals. Its unique properties have made it an important tool in the field of chemistry.
