Flame retardant

Flame retardantZinc borateProperties and features: Zinc borate(3.5H2O),zinc borate(7H2O),zinc borate(modified) and Anhydrous zinc borate are the four 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 borate3.5H2OZincborate7H2OZincborateModifiedZincborateAnhydrousAppearanceWhite powderB2O3 %48±1.541±1.5≥48.052-56ZnO %37±1.532±1.5≥37.042-44Loss on ignition %13.5-15.524.0-26.5≥24≤1.5(400°C)Free water %≤1.01.01.00.5Pass Mesh 325 %≤1.01.01.01.0Notes: The particle size can be produced according to customer'srequirements.Use: Firebrake Zinc borate is inorganic addition flame retardant. it has good hot stability,stops buring and vanishes smokings.It can replace antimonous oxide.Widely used in rubber, plastic,wood,cable, coating,etc. Zinc borate,modified can completely replace zinc borate.It have the advantage of lower price,better effect stops buring and vanishes smokings.