CHLORUM. 109 



CHLORUM. CHLORINE. Cl. 35-5. 



Although not contained in the Pharmacopoeia as 

 the pure gas under its own name, chlorine is furnished 

 by several important preparations, as follows : 



ff. Liquor Chlori. Solution of Chlorine. Chlorine 

 gas dissolved in Water. 



Source. Made by heating Hydrochloric Acid in 

 water with Black Oxide of Manganese, passing the gaa 

 into Water, and shaking till it is absorbed. 



Characters. A yellowish - green liquid smelling 

 strongly of chlorine. 



Impurities. Salts, not volatile ; deficient Cl, detected 

 volumetrically by hyposulphite of soda. 



In compatibles. Salts of lead and silver. 



Dose. 10 to 20 min. in water. 



b. Calx Chlorata, See page 50. 



g. Liquor Calcis Chloratse. See page 50. 



B. Vapor Chlori.- Chlorinated Lime and Water. 

 See page 50. 



c. Liquor Sodas Chlorata. See page 38. 



a. Cataplasma Sodae Chloratse. See page 38. 



ACTION AND USES. 

 1. IMMEDIATE LOCAL ACTION AND TT8E8. 



Externally, the action and uses of chlorine depend upon the 

 great affinity which it possesses for hydrogen, and its consequent 

 power to decompose compounds in which hydrogen forms part 

 of the molecule, such as ammonia, sulphuretted hydrogen, sul- 

 phide of ammonium, and water. The properties of the body on 

 which it acts (chemical, vital, or both) are completely altered ; 

 whilst nascent oxygen is set free, and chlorine further com- 

 bines with the remaining elements of the broken-down mole- 

 cule. Thus it is a powerful irritant to the skin, 

 redness, vesication, even sloughing, and coagulating the albu- 

 minates of the part. For the same reason chlorine is the most 

 powerful of all disinfectants, deodorisers, and decolorisers, its 

 activity as a disinfectant greatly exceeding that of carbolic acid, 

 and even corrosive sublimate. As a stimulant and disinfec- 

 tant, chlorine water, or the solutions of chlorinated lime or of 



