Alcohol
Officinal alcohol (U. S.
Ph.) contains 85 per cent. by weight, or 89 per cent. by volume, of pure alcohol; its specific gravity is .835, or 38.45° Baumé.
Baumé. furnished with a ground-glass stopper.
A, A bottle with two necks, the upper C, Bladder containing spirit, filled by B, Loop of cord to hang up the apparatus. means of the bottle, A.
D, Neck of bladder accurately secured to the lower neck of the bottle, A. bladder, it gives alcohol sufficiently pure for After the first or second time of using the most experimental purposes. Before hanging the apparatus up, it is better to enclose and suspend it in a coarse netting, which will prevent any accident arising from the strain on the neck of the bladder. Should weaker spirit be used, to procure alcohol by either method, it than that directed in the preceding formula must be previously concentrated, or the operation repeated a second time.
Absolute alcohol is used to dissolve resins by the varnish maker; essential oils, by the