... (%): 37-40 2.Inorganic additive flame retardant 3.The fire-retardant effect Molecular Formula: 2ZnO•3B2O3•3.5H2O Molecular Weight: 434.5 CAS NO.:1332 ... of rubber, plastic, cable, timber, military products, coating, tarpaulin, etc.3.Package, transportation and storagePackage: outer woven bag with inner plastic ... : at dry warehouse with good ventilation. Zink Borate/Zinc Borate/3.5H2O/Boric Acid