POTASSII lODIDUM — POTASSIUM IODIDE 379 



per cent, of iodine, occurs as a light yellow, amorphous powder, of an 

 aromatic odor, soluble in alcohol, ether and oils, insoluble in glycerin 

 and water. 



Uses. Substitute for iodoform. 



* Eigon and Diodof orm. Eigon, an iodine proteid and diodo- 

 form (iodoethylene), C2I4 are yellow odorless powders. They are 

 xised as iodoform substitutes but have also been used internally for 

 their iodine effect but have no advantages over the other iodides. 



The antiseptic effect of iodoform has also been sought by intro- 

 ducing iodine into the nucleus of the benzol derivatives but the iodine 

 is held so firmly that they do not possess the iodoform action, but are 

 nevertheless antiseptics due to the benzol constituents. Among these 

 preparations are losophan, nosophen, antinosin, eudoxin, sozoidol and 

 picrol. 



* Losophan (tri-iodo-meta-cresol), occurs as white, odorless 

 needles, almost insoluble in water. This is very irritant and is 

 chiefly used against parasitic skin affections in from 1 to 3 per cent, 

 ointments. It contains 80 per cent, of iodine but does not free it in 

 the tissues. 



* Nosophen (Tetra-iodo-phenolphthalein), and its bismuth salt, 

 Evdoxin, are brown powders, practically insoluble in water. They 

 are used externally, as iodoform. 



* Antinosin, .the sodium salt of nosophen, occurs as blue crystals, 

 soluble in water. It is used in solution of 0.1 to 2 per cent, as an 

 antiseptic. 



* Sozoidol and Picrol are oxidized aromatic sulpho acids. So- 

 zoidol is chemically Di-iodo-phenol-sulphoacid. It is used in the 

 form of its salts of mercury, sodium, potassium and zinc as an anti- 

 septic. 



IODIDES 



The iodides of potassium, ammonium,, sodium, strontium, and 

 lead are official. Besides these we have diluted hydriodic acid which 

 is used for the iodide action. Potassium iodide is the preparation 

 most used, so will be discussed in detail, and the differences in the 

 actions of the others pointed out. 



POTASSII lODIDUM — POTASSIUM IODIDE 



Potassium iodide occurs as colorless, transparent or translucent 

 crystals, or as a white granular powder, having a pungent saline taste, 

 soluble in 0.7 part of water, 2.5 parts of glycerin and 12 of alcohol. 



Doses. H. 3 j — ijss; 5 — 10. D. gr. iij— xv; 0.2 — 1. 

 * Unofficial. 



