PREPARATION OP CITRATE OP IRON. 
151 
ART. XXXVII. — PREPARATION OF CITRATE OF IRON. 
BY M, HECTOR BERNIER. 
In the Journal de Chimie Medicale for December, 1842, 
M. H. Bernier publishes the following method of preparing 
citrate of iron : — 
jfc. Pure protosulphate of iron 1 
Carbonate of soda 1.5 
After having separately dissolved the salts, the solutions 
are mixed: the precipitated carbonate is collected on a filter, 
and washed with distilled water to free it from any sulphate 
of soda which it may retain; after this washing, it is put 
into a porcelain capsule with a little distilled water ; pure 
citric acid dissolved in the smallest quantity of water is 
then added to the liquor, which is kept stirred, until the 
carbonate of iron is partly decomposed; the liquor is then 
left to itself for one or two days, and occasionally stirred. 
If the carbonate of iron is not entirely dissolved, a few 
drops of citric acid are added, and it is filtered. 
In this manner a very concentrated solution of citrate of 
iron is obtained, and nothing further is required but evapo- 
rating it in flat-bottomed porcelain plates, at a temperature 
of 25° to 30° C. 
This process yields citrate of iron of a fine garnet color. 
We may thus, with almost all the weak acids, prepare salts 
of iron. Ibid. 
