Just do a base-> acid titration with phenolphthalein .-- Bennybp 21 : 31, 2 May 2007 ( UTC)
32.
The FDA will accept comments from manufacturers, consumers and other interested parties for the next month, then make a decision on phenolphthalein.
33.
Phenolphthalein adopts four different states in aqueous solution : Under very strongly acidic conditions, it exists in protonated form, providing an orange coloration.
34.
Schering-Plough Corp ., another major manufacturer of laxatives, said its Correctol and Feen-A-Mint don't contain phenolphthalein.
35.
All non-prescription laxatives that include phenolphthalein would have to be reformulated or taken off the market as part of the FDA's proposal.
36.
In 1871 he discovered the synthesis of phenolphthalein by condensation of phthalic anhydride with two equivalents of phenol under acidic conditions ( hence the name ).
37.
The indicator that I used was phenolphthalein, and at the end of the experiment, the color of the solution is a pale pink color.
38.
A group of FDA experts met behind closed doors in April and determined that the ingredient, known as phenolphthalein, posed a possible risk to humans.
39.
One method of testing a structure for carbonatation is to drill a fresh hole in the surface and then treat the cut surface with phenolphthalein indicator solution.
40.
The phenolphthalein used in this test has been modified from its conventional form, in that it has been oxidized back to its normal, colored form.
