... in which Zinc Borate with 3.5 hydrate is called ZB-2335 (2ZnO.3B2O33.5H2O)is the most common used grade. It has ... improve flame retardant performance.3. Base on its chemical properties, Zinc borate is also used on anti-corrosion, infra red absorption, ... fungicide for wood preservation etc fields.Package:Zinc borate should be pack, transported, stored as normal chemical goods. ...