DescriptionPhenolphthalein.svg Deutsch: Strukturformel von Phenolphthalein English: Chemical structure of Phenolphthalein Date 9 August 2006 Source Own
license: This image is a derivative work of the following images: File:PhenolphthaleinSynthesis.png licensed with PD-self 2008-12-10T02:33:36Z Choij 1361x446
English Phenolphthaleine as dianion within pH-range 8.2-12 German Phenolphthalein als Dianion im pH-Bereich 8,2-12 URL: https://commons.wikimedia.org/wiki/user:NadirSH
English German Indikatorreaktion von Phenolphthalein bei verschiedenen pH-Werten author name string: NadirSH URL: https://commons.wikimedia.org/wiki/user:NadirSH