Process for removing soluble metal cations in iron oxide...

Details Process for removing soluble metal cations in iron oxide... Process for removing soluble metal cations in iron oxide...

C - Chemistry, Metallurgy

09

C

6/210, 23/267, 9

C09C 1/24 (2006.01)

Patent

CA 1192723

ABSTRACT OF THE DISCLOSURE: The present invention relates to a process for removing soluble metal cations contained in iron oxide pigments comprising washing said iron oxide pigment with a ligand compound. The resulting pigments can be used as food colorants or to stabilizer plastics against ultraviolet light degradation.

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