n.1.(Chem.) The hypothetical radical supposed to be characteristic of xanthic acid.
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SF-203, a xanthogen formate, is used as primary collector in both the standard and acid Sewell ore flotation circuits.
There are also promotors based on xanthogen formates and mercaptobenzothiazole (MBT).
The main advantage of xanthogen formates is that they are very stable at low pH and are therefore widely used in acid circuits.