Process for preparing powder-like iron-sodium tartrate complex

Details Process for preparing powder-like iron-sodium tartrate complex Process for preparing powder-like iron-sodium tartrate complex

C - Chemistry, Metallurgy

07

C

260/428.6

C07C 59/255 (2006.01) C07C 51/41 (2006.01) C07F 15/02 (2006.01)

Patent

CA 1251456

PROCESS FOR PREPARING POWDER-LIKE IRON-SODIUM TARTRATE COMPLEX Abstract A process for preparing a powder-like iron-sodium tartrate complex useful for the preparation of a solvent for cellulose which comprises reacting a salt of tri- valent iron with sodium tartrate or primary sodium tartrate or a mixture thereof in an aqueous medium at a molar ratio of said reactants of 1:3.0-3.3 res- pectively, a concentration of the salt of trivalent iron of 0.5-0.7 mole/l of the starting reaction mixtu- re and at a pH of the reaction mixture of 0.8-5.5 with the formation of a reaction mass containing the desired product; the latter is precipitated from the reaction mass by means of a precipitation agent such as methanol, ethanol, propanol or acetone at a volume ratio of precipitation agent to the reaction mass of 0.7-1.5;1.0 respectively with the formation of a precipitate of the desired product and a mother liquor; the precipitate of the desired product is separated from the mother liquor and dried at a temperature of from 30 to 105°C.

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