Patent ID: 7674780

Claim:
A process of preparing a co-precipitate comprising iron sucrose complex and sucrose, comprising the steps of: (a) reacting ferric hydroxide and sucrose in an aqueous reaction mixture comprising sodium ions, at a selected molar ratio of sucrose to ferric hydroxide, for a selected time interval, at a selected temperature, and at a pH in the range from about 6.5 to about 13; (b) isolating iron sucrose complex from the reaction mixture; (c) dissolving the isolated iron sucrose complex in an aqueous solvent to form a solution; (d) forming a mixture by adding to the solution formed in step (c) at least one water-miscible organic solvent in an amount sufficient to precipitate iron sucrose complex from the solution; (e) collecting the purified iron sucrose complex from the mixture formed in step (d); (f) dissolving the purified iron sucrose complex product formed in step (e) in an aqueous sucrose solution; (g) forming a mixture by adding to the iron sucrose complex solution formed in step (f) at least one water-miscible organic solvent in an amount sufficient to co-precipitate iron sucrose complex and sucrose; and (h) collecting the co-precipitate formed in step (g).