::  Fluorosilicic Acid Fluorosilicic Acid   1. Molecular formula:H2SiF6 2. Molecular weight:144.09 3. Property:Colorless,transparent and smoky liquid with penetrating odor;highly acidic;soluble in water and volatile;with disinfecting action;corrosive to glass,ceramics,lead and other metals;highly corrosive to human skin and harmful to people's respiratory organs;keep it in a container made of plastics. 4. Usage:Mainly applied to the preparation of aluminium fluoride,cryolite and sodium fluorosilicate. 5. Specificatios Assay:(H2SiF6) 28% 40% Impurity level:   Impurity name Index Dissociate acid(HF) ≤1% Sulfate(SO4) ≤0.1% Iron(Fe) ≤0.004% Heavy metal(Pb) ≤0.005% 6. Packing:25kg or 250kg plastic drum. 7. Caution at transportation:Corrosive;UN code:1778;specified number of hazardous goods:91036;class of risk:8.