Halox CW-2230 Calcium borosilicate Halox Functional pigment >> Anti-corrosive Corrosion inhibitor Alkyd Resins Epoxy Resins Corrosion Inhibiting Pigments HALOX® CW-2230 Borosilicate Medium Oil Alkyds Long Oil Alkyds Epoxy Esters Modified Alkyds Borosilicate. Used as a corrosion inhibitor for medium and long oil alkyds, epoxy esters and modified alkyds.