324 INORGANIC AGENTS 



Class 6.— Antiseptics. 



AciDUM Oarbolicum: Ceudum. Crude Carbolic Acid. 



. Synonym. — Acide phenique cru, Fr.; rohe carbolsaure, G. 



Derivation. — A liquid consisting of various constituents 

 of coal tar, chiefly cresol and phenol, obtained by fractional 

 distillation at a temperature between 302° F. and 392° F., 

 and twice rectified at a temperature between 338° F. and 

 37i° F. 



Properties. — A nearly colorless, or reddish-brown liquid 

 of a strongly empyreumatic and creasote-like odor, having 

 a benumbing, blanching and caustic effect upon the skin or 

 mucous membrane, and gradually turning darker on ex- 

 posure to the air and light. Soluble in 15 parts of water. 

 The aqueous solution has a slight acid reaction. ^~ ' 'i 



Phenol (U. S. P.) 

 *AciDUM Carbolicum. Carbolic Acid. CeH^O H. (B. P.) 



Synonym. — Phenic acid, phenol, phenyl alcohol, pheny- 

 licum crystallisatum, E.; acide phenique, acide carbolique, 

 hydrate de phenyle, Fr.; carbolsaure, phenylsaure, phenyl 

 alkohol, G. 



Derivation. — Obtained from crude carbolic acid by 

 agitation with caustic soda, heating to 338° F., and adding 

 hydrochloric acid. Then by agitation with sodium chloride, 

 digestion with calcium chloride, and distillation at a tempe- 

 rature between 336° F. and 374° F., and finally by crystalli- 

 zation. 



Properties. — Colorless, interlaced, or separate, needle- 

 shaped crystals, or a white crystalline mass, sometimes 

 acquiring a reddish tint ; having a characteristic, somewhat 

 aromatic odor, and when copiously diluted with water, a 

 sweetish taste with a slightly burning after-taste. Delique- 

 scent on exposure to damp air. Soluble in about 15 parts 

 of water, and very soluble in alcohol, ether, chloroform, 

 glycerin, fixed and volatile oils. Faintly acid reaction. 



• The U. S. P., 1905, recognizes only "Phenol" aa the official name for oar. 

 Dolic acid. 



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