... of crystal water, oC >320Refractive index1.58Application:1. Zinc borate as antimony oxide or other halogen flame retardant additives ... processing, such as PVC, PE, PP, enhance polyamide, polyvinyl chloride (PVC) fat, polystyrene polyester, epoxy resin, acid and ethylene ... also according to customer requirements of various weight packing. Zinc Borate(Zinc borate powder)zinc borate flame retardant