222 INORGANIC AGENTS 



SECTION IX. 

 Chlorine. 



Chlorum. Chlorine. CI. 

 The gas is not official. 



Aqua Chlori. Chlorine water. (U. S. P.) 



Synonym. — ^^Liquor chlori, B.P.; chlorum solutum, aqua 

 oxymuriatica, solution of chlorine, E.; aqua chlorata, P.G.; 

 eau chloree, chlore liquide, Fr.; chlor-wasser, G. 



An aqueous solution of chlorine (CI), containing at 

 least 0.4 per cent, of the gas. 



Derivation. — Generate chlorine gas with hydrochloric 

 acid, 35 ; water, 25 ; and manganese dioxide, 10. Heat in 

 flask and pass gas into water. 



4 H CI + Mn O, = CI, + 2 H,0 + MnCl,. 



Properties. — A clear, greenish-yellow liquid, having the 

 suffocating odor and disagreeable taste of chlorine, and 

 leaving no residue on evaporation. Incompatible with salts 

 of silver and lead. The preparation deteriorates on keeping. 



Dose. — Not used internally. 



The B. P. preparation contains 0.6 per cent, of chlorine. 



Calx Chlorata. Chlorinated Lime. Ca ClaO,, Ca CI,. 

 (U. S. P.) 



Synonym. — Calx chlorinata, B. P.; calcaria chlorata, P. 

 G.; chloris calcicus, chloruretum calcis, calcii hypochloris, 

 chloride of lime, hypochloride of calcium, bleaching powder, 

 E.; chlorure de chaux, poudre de Tennant, ou de Knox, Fr.; 

 chlorkalk, bleichkalk, G. 



A preparation often improperly called " chloride of 

 lime." It should contain not less than 35 per cent, of avail- 

 able chlorine. 



Derivation. — Pass chlorine gas over calcium hydrate, 



