HYDROeHLGRIC AGID 245- 



SECTION XL 



Acids. 



AciDUM Hydrochloricum. Hydrochloric Acid. H CI. 



(U.S.&B.P.) 



(Muriatic Add.) 



Synonym. — Acidum hydrochloratum, S. chlorhydricum, 

 E.; acide chlorhydrique S. mariatique, Fr.; salzsaiire, G. 



A liquid composed of 31.9 per cent., by weight, of abso- 

 lute hydrochloric acid, and 68.1 per cent, of water. (U. 8. P.) 



Derivation. — Distil together sulphuric acid, salt, and 

 water. The resulting hydrochloric acid gas is passed into 

 distilled water, while acid sodium sulphate remg-ins in the 

 retort and is farther acted upon by salt. 2 Na CI + H2S O4 

 = H 01 + Na CI + Na HSO,; then : Na HSO, + Na CI = 

 H CI + Na,SG,. 



Properties. — A colorless, fuming liquid, of a pungent 

 odor and an intensely acid taste. Spec, gr., about 1.163 at 

 15° C. (59° F.) Miscible, in all proportions, with water 

 and alcohol. 



Incompatibles. — Alkaline and other carbonates, and lead 

 and silver salts. 



preparations. 



Acidum Hydrochloricum Dilutum, Acidum Nitrohydrochloricum, 



Acidum Nitrohydrochloricum Dilutum. 



Acidum Hydrochloricum Dilutum. Diluted Hydrochloric Acid. 



(U. S. & B. P.) 



(Diluted Muriatic Acid.) 



Derivation. — Hydrochloric acid, 100; distilled water, 219. Diluted 

 hydrochloric acid contains 10 per cent, of absolute hydrochloric acid. 

 (U. S. P.) 



Properties. — It does not fume in the air and is without odor. 

 Spec, gr., 1.050. Otherwise corresponds to hydrochloric acid. (U. S. P.) 



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

 Sw. &D., mx.-xxx. (.6-2.). . . 



