is it manufactured in a factory?
2007-05-17 14:25:56 · 3 answers · asked by Russel 1 in Science & Mathematics ➔ Chemistry
One combines solid phenol (C6H5OH), phthalic anhydride, and a little anhydrous zinc chloride and heats (melts) them together.
It is made in factories, though I have produced a little of it in a test tube.
2007-05-17 14:29:40 · answer #1 · answered by steve_geo1 7 · 0⤊ 0⤋
Condensation of phenol and phthalic anhydride. Yes made in a factory. Use can make it in a test-tube. Heat phenol and phthalic anhydride crystals together in a test-tube with a drop or 2 of conc. sulphuric acid. The product will go bright pink if added to sodium hydroxide (or any alkali) solution.
2007-05-17 21:31:57 · answer #2 · answered by Aurium 6 · 0⤊ 0⤋
it would be manufactured in a lab
this is from wikipedia
Phenolphthalein is synthesized by condensation of phthalic anhydride with two equivalents of phenol under acidic conditions (hence the name). It was discovered in 1871 by Adolf von Baeyer.
2007-05-17 21:29:53 · answer #3 · answered by Ferb 2 · 0⤊ 0⤋