Flame retardant zinc borate

Flame retardant zinc borate Flame retardant zinc borate is one of enviorment -friendly halogen-free Flame retardant,used as flame retardant and smoke suppresant,partical or complete replacement of antimony trioxide. Properties and features: Zinc borate(3.5H2O),zinc borate(7H2O) and zinc borate(modified) are the three main types of zinc borate.white powder.Density is 2.67g/cm3. The melting point is 980°C.The refractive index is 1.58.Insolublein water, alcohol. but solublein chlorhydric acid, sulfuric acid. Quality standard ItemIndexZinc borate3.5H2OZincborate7H2OZincborateModifiedAppearance White powderB2O3 % 48±1.541±1.5≥48.0ZnO % 37±1.532±1.5≥37.0Loss on ignition % 13.5-15.524.0-26.5≥24Free water %≤ 1.01.01.0Pass Mesh 325 %≤ 1.01.01.0Notes: The particle size can be produced according to customer'srequirements. Use: Zinc borate is inorganic addition flame retardant. is better flam retarding effect and can replace antimonous oxide. Its characteristics are that it has good hot stability, and not only stops buring and vanishes smokings.It is widely used in rubber, plastic,wood,cable, coating,etc. Zinc borate,modified can completely replace zinc borate.It have the advantage of lower price and better effect stops buring and vanishes smokings. Package: Paper-plastic bag or plastic weaved bag, lined with PE bag, and net weight 25KG.