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Phenolphthalein is a synthetic dye and a laxative that is used as a pH indicator. It has various applications in medicine, chemistry, and food industry, but it is also carcinogenic and toxic.
Phenolphthalein | C20H14O4 | CID 4764 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.
26 sie 2024 · Phenolphthalein, (C20H14O4), an organic compound of the phthalein family that is widely employed as an acid-base indicator. As an indicator of a solution’s pH, phenolphthalein is colourless below pH 8.5 and attains a pink to deep red hue above pH 9.0.
24 gru 2018 · The origins of phenolphthalein lie in the German chemical industry during the heyday of artificial dye discovery in the late 19th century. An organic molecule made of only carbon, hydrogen and oxygen, it was first synthesised in 1871 by Adolf von Baeyer, who combined phenol and phthalic anhydride in the presence of sulfuric acid or zinc ...
19 sty 2022 · Phenolphthalein is a pH indicator that changes color from colorless to fuchsia pink as the pH increases. Learn how to make it, how it works, and what it is used for in chemistry and other fields.
22 kwi 2024 · Phenolphthalein (molecular formula C 20 H 14 O 4) is a pH indicator. In acidic solutions it remains colorless, but in the presence of basic solutions it takes on a pinkish color with a turning point between pH = 8.0 (colorless) to pH = 9.8 (magenta or pinkish).
Phenolphthalein is a chemical compound that changes color depending on pH. It is used as a pH indicator, a laxative, a blood test, and a disappearing ink.
