Production of a yellow iron oxide pigment

Details Production of a yellow iron oxide pigment Production of a yellow iron oxide pigment

C - Chemistry, Metallurgy

09

C

6/210

C09C 1/24 (2006.01) C01G 49/06 (2006.01)

Patent

CA 1140303

ABSTRACT OF THE DISCLOSURE Yellow iron oxide pigment is prepared according to this invention by reacting a soluble ferrous salt with a metal carbonate which is insoluble at a pH greater than 4, such as magnesium carbonate, in the presence of oxygen in a reaction system which is maintained acidic (i.e., with a pH of 4 or less) during the reaction.

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