Abstract:Detail of the Preparation of Dihydroxy-dihydroquinone.-A mixture of 100 g. of hydroquinol, 400 cc. of water, 150 g. of sodium chlorate, 50 cc. of N hydrochloric acid and 10 cc. of a 1% osmium tetroxide solution is made in a 1-liter flask. The change to quinhydrone is observed to occur rapidly and it is found necessary to cool the mixture. After the evolution of heat has ceased, the flask is closed with a stopper carrying a tube equipped with a Bunsen valve (slit rubber tube closed at the outer end) so that the… Show more
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