GLYCERINUM. HEXAMETHYLENAMINA. 29 



Incompatibilities: To some Glycerin add 

 AgNO 3 , T. S K 2 MnO 4 , T. S. 



Glycerin forms an explosive compound with con. HNO 3 , or when triturated with 

 any dry, quickly-oxidizing substances. 



Aside from its great utility as a solvent, Glycerin is used chiefly for its emollient 

 and extractive properties. 



Official preparations are: Glycerinated Gelatin, Glycerin Suppositories, and Gly- 

 cerites of Tannic Acid, Starch, Boroglycerin, Hydrastis, and Phenol. 



GLYCYRRHIZA. 



Licorice consists of the dried rhizome and roots of Glycyrrhiza glabra, (Fain. 

 Leguminosce) , coming from both Spain and Russia. The Spanish variety is somewhat 

 the darker. 



Properties of pozvdcred Licorice: 



Appearance .... 

 Color 



Odor 



Taste .. 



Boil 5 Gm. Licorice Powder in 30 mils H 2 O for 5 minutes; filter and note: 

 Color ... .. Odor .. .. Taste 



Although Licorice is a mild laxative, it is used principally for disguising the 

 taste of bitter or salty medicines. 



Official preparations are: the pure Extract, Fluidextract, Elixir, Compound 

 Mixture, Compound Powder, and Ammoniated Licorice. 



HEXAMETHYLENAMINA. 



Hexamethylenamine is a product obtained by treating 40% formaldehyde solu- 

 tion with stronger ammonia water. It should be kept in tight containers. 



Properties: 



Appearance . 



Color .. 



Odor 



Taste .. 



Solubility and reaction : 

 H 2 O ... 



C 2 H 5 OH 



Incompatibilities: To Hexamethylenamina, 10% sol., add 

 Ac. Tann., T. S HgCl 2 H 2 SO 4 , dil 



Hexamethylenamine is used principally as a urinary disinfectant, some free 

 formaldehyde being formed in acid urine. Dose, 0.25 Gm., diluted with at least 250 

 mils H 2 O. 



