... 3.Particle Size D50:3-5 micron Zinc Borate For Rubber Conveyer Belt Molecular formula: 2ZnO·3B2O3·3.5H2OMolecular weight: 434.5SPECIFICATIONS ... high efficient flame retardant, it is widely used in plastic, rubber, coating etc fields.APPLICATION1. Zinc borate can be used as ... used in PVC, PE, Polyolefin, Epoxy Polyamide etc resins and rubber process. Moreover, it is widely used in textile, fiber, floor ...