... 1g/KgIndex of Refraction: 1.582)Usage:Zinc Borate is widely used in producing polyolefine,rubber,hydroxybenzene resin, ... ,paint,china,glaze, antiseptic and pesticide.Zinc Borate as upper-fine flame retardant, its character of smoke abatement is better ... than any other flame retardant, in producing polyolefine can replace antimony trioxide. Different model Zinc Borate has different usefulness. 3 ...