40% hexfluorosilicic acid Fluosilicic acid H2SiF6

.Molecular formula : Fluorosilicic Acid H2SiF6 
Molecular weight : **4.*9 
Property : Aqueous solution is colorless transparent fuming liquid. Relative density:1.*2. Boiling point: **8.5 °C, highly volatile. Soluble in water. Fluosilicic acid does not have anhydrous products, maximum concentration:*0.*2%. It is harmful to respiratory organs of human body. 

Use : It is basic materials to prepare potassium fluozirconate, ammonium fluozirconate, magnesium fluozirconate, copper fluozirconate, barium fluozirconate, lead fluozirconate and other fluosilicate, silicon tetrafluoride. Used in metal plating, wood preservation, beer disinfection, equipment disinfection in brewing industry (**2% H2SiF6 ) and lead electroanalysis etc.. Also used as mordant and metal finishing. 

Product quality : Company standard