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This product is colorless shiny crystal or white powder, belonging to tetragonal crystal system. It has hexagonal or octahedral crystals, which are soluble in water and slightly soluble in alcohol. The aqueous solution is alkaline and can corrode glass. Dissolve in hydrofluoric acid to form sodium hydrogen fluoride, toxic! It can corrode skin and stimulate mucous membrane. Invasion of the nervous system. Specific gravity 1.02g/mL (20 ℃), melting point 993 ℃, boiling point 1700 ℃.
Specification
| Project | Standard | Result |
| Appearance | White powder | Qualified |
| Content | ≥99.00 | 99.26 |
| Water insoluble matter | ≤0.05 | 0.02 |
| Sulphate | ≤0.03 | <0.03 |
| Fluorosilicate (as SiF SiF2-) | ≤0.6 | 0.12 |
| Iron | ≤0.005 | 0.002 |
| Acidity | ≤5.0 | 0-2 |
| Alkalinity | ≤2.0 | 0.1-0.5 |
| Loss on drying | ≤0.2 | 0.09 |
| Chloride | ≤0.005 | <0.005 |
Purpose:
Fluxes for aluminum smelting and welding, medical and wood preservatives, fungicides for brewing industry, agricultural pesticides, fluorinated treatment agents for drinking water,
It is used in the paper industry, the production of toothpaste, chemical reagents, as well as the pickling of strip steel and stainless steel, the raw materials for manufacturing other fluorides, adhesives, and the production of fluorine, the production element of paper, to remove HF.
In addition, it is also used in enamel pharmaceutical industry. Steel analysis. Determination of phosphorus by photoelectric colorimetry. Scandium blood test was determined by drop analysis. Masking agent.
