FERRI HYPOPHOSPHITUM 409 



PERRI HYDROXIDUM — IRON HYDROXIDE 



Iron hydroxide is only used in the preparation of the antidote 

 for arsenic. 

 Preparation. 



Ferri Hydroxidum cum Magnesii Oxido — Ferric Hydroxide 

 with Magnesium Oxide. 



Ferric hydrate is made by precipitating any liquid preparation 

 of iron with an alkali. Ferric hydrate with magnesium oxide is 

 made by adding magnesia in excess. This is prepared as follows: 



Solution of Ferric Sulphate, 40 mils 

 Magnesium Oxide, 10 grams 

 Water, a sufficient quantity. 



Since great haste is essential in the preparation of this mixture 

 it should be kept on hand in separate bottles as : 



1. Mix the solution of ferric sulphate with 125 mils (4 ounces) 

 of water and keep in a large well stoppered bottle (1000 mils 1 

 quart). 



2. Magnesium carbonate 10 grams, rubbed to a smooth mass 

 with water, transfer this to a bottle holding 1000 mils (1 quart) and 

 fill about three fourths full with water. 



For use shake #2 thoroughly, add it to #1 and shake until 

 smooth. Given in large doses, dogs one half to 4 ounces, horses 

 and cattle 8 — 16 ounces. 



FERRI ET AMMONII SULPHAS — FERRIC AMMONIUM 



SULPHATE 



Ferric ammonium sulphate, ferric alum occurs as pale, violet 

 octohedral crystals, without odor and having an acrid, styptic taste. 

 It is soluble in 2.7 parts of water, insoluble in alcohol, efflorescent in 

 air. Ferric alum is a stronger astringent than alum. It has no 

 other use. 



* FERRI HYPOPHOSPHITUM — FERRIC HYPOPHOSPHITE 



Iron hypophosphite occurs as a white or grayish white powder, 

 odorless and nearly tasteless ; permanent in air. 



Dose. H. not used. D. gr. j — v; 0.6 — 0.3. 



This has the same action as the other hypophosphites but in addi- 

 tion has some value as a hematinic. It is rarely used in veterinary 

 medicine. See Hypophosphites. 



* Unofficial. 



