Product description: Zine silicofluoride Formula: ZnSiF6.6H2O Molecular Weight: 315.54 UN.NO: 2855 HAZARD CLASS : 6.1 H.S.CODE: 2826.9000 Physical chemistry properties: Clear hexagonal system,rhombohedral crystal or white crystal powder.The relative density is 2.104.It dissolve easily in water, dissoves in inorganic acid,insolubilizes in ethyl hydroxide.Decomposed as silicon tetrafluoride ,water and zinc fluoride heated to 100°C.Hydrogenion index of 1% of the aqueous solution is 3.2 Poisonous! Introduction: It is used in conerete fast Stiffemer,wood preserative,cured gypsum fortifier,treatment agent after wash,mothproofing agent and catalyst for polyester,and also in dispose the bath solution of the zinc. Quality standard: Index name Chemical composition ZnSiF6.6H2O %≥ ≥ 98% ZnF6.SiO2 %≤ ≤ 0.25% ZnSO4.7H2O %≤ ≤ 0.5% H2O %≤ ≤ 0.6%