MANGANESE — CHROMIUM 435 



ride. Has been recommended for chronic rheumatism, particularly 

 the so called " syphilitic " of man, but is of no importance in 

 veterinary medicine. 



MANGANUM — MANGANESE 



Manganese is found in traces in the red blood cells and other 

 tissues of the body, for which reason it has been recommended in 

 the treatment of chlorosis and other forms of anemia but the concen- 

 sus of opinion of most authorities is that it is worthless in these 

 conditions. The soluble salts are not absorbed sufficiently rapid 

 to produce systematic effects and the action of the soluble salts is 

 purely local. The permanganate has been recommended by some 

 as an emmenagogue, but since it is irritating and at the same time 

 decomposed into the black oxide of manganese, this preparation, 

 Mangani Dioxidum Prsecipitatum, which is free from irritating 

 effects, is to be preferred. The permanganate is the most important 

 salt and since it is of most service as a germicide it is discussed un- 

 der that head. 



The following salts of manganese are used : 



Mangani Dioxidum Prsecipitatum. Precipitated manganese 

 dioxide. 



Properties: Heavy, very fine black powder, odorless and taste- 

 less, permanent in air, insoluble in water and alcohol. 



* Mangani Sulphas. 



* Mangani Hypophosphide. 

 Potassii Permanganas. 



* Syrupus Perri et Mangani lodidi. 'N. F. 



CHROMIUM 



Three preparations of chromium are used in medicine: 

 Chromium trioxidum, chromium sulphate and Potassium dichro- 

 mate. 



CHROMII TRIOXIDUM — CHROMIUM TRIOXIDE 



Synonym. Chromic Acid 



Chromium trioxide occurs in the form of small needle shaped 

 crystals or rhombic prisms, of a dark purplish-red color and metal- 

 lic lustre, odorless, deliquescent in moist air. It is very soluble in 

 water. Decomposition takes place very rapidly when it is brought 

 into contact with glycerin, ether and other organic solvents, often 

 with dangerous violence. 



Therapeutics. Chromium trioxide coagulates albumen and is 

 used entirely as a caustic to destroy granulations and pathological 

 tissue, but requires careful handling, as it is liable to cause dangerous 

 • Unofficial. 



