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Phenolphthalein - An acid-base indicator which is colorless in acid solution, but turns pink to red as the solution becomes alkaline. It is used medicinally as a cathartic. |
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Phenolsulfonphthalein - Red dye, pH indicator, and diagnostic aid for determination of renal function. It is used also for studies of the gastrointestinal and other systems. |
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Sulfobromophthalein - A phenolphthalein that is used as a diagnostic aid in heptatic function determination. |
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Thymolphthalein - Used as a pH indicator and as a reagent for blood after decolorizing the alkaline solution by boiling with zinc dust. |
CANADIAN
MEDICAL GUIDE