11 октября, 2015 
Pokraskin Nitrochlorotoluene is reduced by the Bechamp method, adding 100 grams of the nitro compound during the course of 2 hours to a boiling, constantly stirred mixture of 100 grams of finely powdered iron, 200 cc. water, and 20 cc. technical hydrochloric acid. 20 grams of soda ash is then added, and the apparatus is heated in an oil bath at 200° while the chlorotoluidine is distilled with superheated steam, the temperature of the steam being 140°C. The base is carried over easily with 3 parts of water at the most, separated in a separatory funnel, and finally purified by vacuum distillation. The boiling point is 105-110° at 10 mm., 240° at atmospheric pressure.
The distillation is not absolutely necessary, but it is advisable to remove all of the iron. The yield is about 94 per cent of the theoretical amount.
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