264 INOEGANIC AGENTS 



Derivation. — Sulphuric acid, 111 Co.; tincture of ginger, SO Co.; 

 oil of cinnamon, 1 Cc; alcohol to make 1,000 Cc. (U. S. P.) ' 



Properties. — Aromatic sulphuric acid contains about 20 per cent., 

 by weight, of official sulphuric acid, partly in form of ethyl-sulphuric 

 acid. Spec. gr. about 0.939. (U. S. P.) 



Dose.—B.., 3 ss.-i. (3.-4.); C, 3 i.-ii. (4.-8.); Sh., m,xv.-xxx. (1.-2.); 

 Sw. & D., -niv.-xv. (.3-1.). 



AciDUM NiTEicuM. Nitric Acid. HNO3. (U. S. & B. P.) 



Synonym. — Acide azotique, Fr.; salpetersaure, G. 



A liquid composed of 68 per cent., by -weight, of abso- 

 lute nitric acid, and 32 per cent, of water. 



Derivation. — Seven parts of sodium or potassium nitrate 

 are distilled witli four parts of sulphuric acid and water. 

 KNO3 + H,SO, = KHSO, + HNO,. 



Properties. — A colorless, fuming liquid, very caustic and 

 corrosive, and having a peculiar, somewhat suffocating odor. 

 Spec. gr. about 1.414. (U. S. P.) 



Incompatibles. — Alkalies and carbonates, iron sulphate, 

 lead acetate and alcohol. 



PEEPABATIONS. 



ACIDUM NlTRICUM DlLUTUM, ACIDUM NiTBOHYDEOCHLORICUM, 

 ACIDTJM NiTROHYDROCHLORICUM DiLUTUM. 



I, Acidum Nitricum Dilutum, Diluted Nitric Acid. (U. S. & B. P.) 



Derivation. — Nitric acid, 100; distilled water, 580. Diluted nitric 

 acid contains 10 per cent., by weight, of absolute nitric acid. Spec. gr. 

 about 1.057. (U. S. P.) 



Dose.— H., 3 i.-ii. (4.-8.); C, 3ii.-iv. (8.-15.); Sh., 3 ss.-i. (2.-4.); 

 Sw. & D., mv.-xxx. (.3-2.). 



II. Acidum Nitrohydrochloricum. Nitrohydrochloric Acid. (U. S. P.) 



{Nitromuriatic Acid.) 



Derivation. — Nitric acid, 180 ; hydrochloric acid, 830. Chemical 

 composition uncertain. 



Properties. — A golden yellow, fuming and very corrosive liquid, 

 having a strong odor of chlorine. The strong acid should always be 

 freshly prepared and should be used in preference to the diluted acid. 

 It may be made oS hand by mixing 4 parts of nitric acid with 16 parts 



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