Читать книгу Henley's Formulas, Recipes and Processes (Applied Chemistry) - Various - Страница 671
To Restore Reddened Carbolic Acid.
Оглавление—Demont’s method consists in melting the acid on the water bath, adding 12 per cent of alcohol of 95 per cent, letting cool down and, after the greater part of the substance has crystallized out, decanting the liquid residue. The crystals obtained in this manner are snowy white, and on being melted yield a nearly colorless liquid. The alcohol may be recovered by redistillation at a low temperature. This is a rather costly procedure.
CARBOLIC SOAP: See Soap.
