1- Name: hexfluorosilicic acid[16961-83-4] 2- Molecular formula: H2SiF6
3- Molecular weight: 144.09 4- UN .No:1778
5- Product Specifications:
H2SiF6 | 40%MIN |
HF(free) | 0.8%MAX |
SO4 | 0.5%MAX |
Ca | 1.0%MAX |
Cl | 0.1% MAX |
Heavy mater( as Pb) | 0.02%MAX |
Fe | 0.03%MAX |
6- Character: It is colorless transparent liquid with specific gravity of 1.32. The boiling piont is 108.5°C. It has thrill smell, strong corrosiveness and poison. Fluosilicate acid volatilizes easily, cannot be made into anhydrous, the highest strength is 60.92%, but it is best stable when the strength is 13.3%. It doesn't decompose as distillation. It can erode glasses,pottery,aluminium and other metals. It has severe corrosive effect on skin, and is toxic to breathing apparatus of human.
7- Uses: It is used as row materials for sodium fluosilicate,potassium fluosilicate,ammonium fluosilicate, copper fluosilicate,barium fluosilicate and other fluosilicates and silicic tetrafluoride. It is also used in metal plating,timber antisepsis,disinfectant(1-2% of solution) of beer and brewing industry, refining lead of electrolysis, as mordant and in the treatment of metal surface.
8- Packing: PEdrum 250kg/drum, IBC tank, 1250kg/tank.
fluorosilicic acid 40 H2SiF6