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phenolphthalein
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phenolphthalein

Acid–base indicator that is clear below pH 8 and red above pH 9.6. It is used in titrating (see titration) weak acids against strong bases.
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Liver and kidney function tests requiring the administration of phthalein compounds such as bromsulfophthalein, phenolsulfonphthalein (PSP), or phenyl ketones (large quantities) may interfere with the ketone tests.
Ketone Tests-Drug by Robert Baird / Health, general community
 
 
 
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