A companion to the United States Pharmacopoeia : being a commentary on the latest edition of the pharmacopoeia and containing the descriptions, properties, uses, and doses of all official and numerous unofficial drugs and preparations in current use in the United States, together with practical hints, working formulas, etc., designed as a ready reference book for pharmacists, physicians, and students : with over 650 original illustrations / by Oscar Oldberg and Otto A. Wall.

  • Oscar Oldberg
Date:
1887
Catalogue details

Licence: Public Domain Mark

Credit: A companion to the United States Pharmacopoeia : being a commentary on the latest edition of the pharmacopoeia and containing the descriptions, properties, uses, and doses of all official and numerous unofficial drugs and preparations in current use in the United States, together with practical hints, working formulas, etc., designed as a ready reference book for pharmacists, physicians, and students : with over 650 original illustrations / by Oscar Oldberg and Otto A. Wall. Source: Wellcome Collection.

Provider: This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.

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    Acidum Ginnamicum. CiNNAMic Acid., Zimmtsaure^ G.; Acid Cinnamiqiie, F.; Acido Cinnamico, Sp.; KaneU s]/ra, Sw. An aromatic acid existing in the balsams of Peru, Tolu, and Storax. It is also found in old resinified oil of cinnamon. At present it is pre- pared in large quantities artificially by Sobering of Berlin. It resembles benzoic acid in appearance and properties, and is attracting attention as an antiseptic. True cinnamic acid may be conveniently prepared from old, hard balsam of tolu, by boiling the tolu with water and lime, filtering while hot, and immediately precipitating with hydrochloric acid. Acidum Citricuiu; U. S. CiTEic Acid. Citronensdure, G.; Acide citrique, Aeide du citron, F.; Acido Citrico, Sp.; Gitronsyra, Sw. Description and Tests.—See the Pharmacopoeia, pages 13 and 14. Permanent in the air at ordinary temperatures if pure. Soluble in twice its weight of glycerin. To neutralize ten grams citric acid dissolved in water requires fif- teen grams jjotassium bicarbonate; twelve grams potassium carbonate; twelve grams sodium bicarbonate; twenty-one grams crystallized sodium carbonate ; 7.4_grams ammonium carbonate ; 24.2 grams water of am- monia ; 8.6 grams stronger water of ammonia ; 7.8 grams magnesium carbonate ; or, 6.7 grams magnesia. Density of Solutions.—According to Schiff the specific gravities of solutions of citric acid of different strengths are as follows: A four per cent, solution has the specific gravity 1.0150; an eight per cent, solution has the specific gravity 1.0306; a twelve per cent, solution has the specific gravity 1.0470; a sixteen per cent, solution has the specific gravity 1.0634; a twenty-four per cent, solution has the specific gravity 1.0979; a thirty-six per cent, solution has the specific gravity 1.1540; a fifty per cent, solution has, according to Gerlach, the specific gravity 1.2204, and a sixty per cent, solution the specific gravity 1.2738. Aqueous solutions of citric acid soon become mouldy.