NILERED / SCIENCE PHOTO LIBRARY NILERED / SCIENCE PHOTO LIBRARY
Crystallization of benzoic acid. Time-lapse footage of a purification stage of an experiment to produce benzoic acid. The impure benzoic acid was dissolved in a beaker of water heated to near its boiling point. Pure crystals of benzoic acid (white) form as the water in the beaker slowly cools. Benzoic acid is used in the chemical industry as a precursor for the synthesis of many other organic compounds.
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