KnowraPhenolphthaleinLinked fromLinked fromThe 6 pages that link to Phenolphthalein, each with the reason it gives.All 6Broader topic 2Related 1Compared with 3Acid–base indicatorBroader topic: Its sharp color change suits many titrations involving weak acids and strong bases.Universal indicatorCompared with: Its sharp transition suits some titrations better than universal indicator’s gradual color scale.pH indicatorBroader topic: Its transition near alkaline pH makes it useful for selected titration endpoints.Bromothymol blueCompared with: Its transition occurs at higher pH, making it better suited to different titration endpoints.Methyl orangeCompared with: Its higher-pH transition makes it better suited to titrations with alkaline equivalence regions.Phthalic acidRelated: It is synthesized using phthalic anhydride as a starting material.