How to analyze potassium hydrogen fluoride

Product basic physical and chemical parameters: Product name: Potassium hydrogen fluoride (KHF2), potassium hydrogen fluoride molecular weight: 78.10 English name: potassium bifluoride traits: Colorless tetragonal or cubic crystals. Slightly sour smell. Relative density 2.37, melting point 225℃. Easily soluble in water, insoluble in alcohol. Aqueous solutions are acidic. Stable in dry air, it absorbs moisture and releases hydrogen fluoride in humid air. When heated to 310°C, HF will escape. At 400°C, the vapor pressure of hydrogen fluoride can reach 0.10325Mpa (latm). The activity of molten potassium hydrogen fluoride is greater than that of potassium fluoride. poisonous. Corrosive. quality index: Compound acid sulfate (SO4) Iron (Fe) Heavy metal (Pb) 25-26% ≤0.05% ≤0.005% ≤0.003% Fluorosilicate (calculated as K2SiF6) Chloride (Cl) Moisture (H2O) ≤0.6% ≤0.05% ≤0.1% Packaging: 　　Packed in plastic woven bags lined with polyethylene plastic bags, 25kg/bag.

Product Specifications Export-grade reagent grade (analytical grade) Execution standard USP-27&KF Yongda standard Shanghai Q/HG22-509-85 Content% ≥99.0% ≥99℅ ≥99.5% Chloride (Cl)% ≤0.01% ≤0.005% ≤0.005% Sulfate (SO4) % ≤0.02% ≤0.001% ≤0.005% Fluorosilicate (calculated as K2SiF6)% ≤0.10% ≤0.001% ≤0.001% Heavy metal (calculated as Pb)% ≤0.003% ≤0.001% ≤0.003% Free acid (calculated as HF) ≤24.5%-26.0% ≤25+1% --- Arsenic (As)% ≤0.0005% ≤0.0002% ≤0.0002% Nickel (Ni)% ≤0.001% ≤0.0001% ≤0.001% Iron (Fe)% ≤0.003% ≤0.0005% ≤0.002% Loss on drying % ≤0.2% ≤0.5% ≤0.5%

Thank you for your hard work. Is there any analysis method?

Content % ≥99.0% ≥99℅ ≥99.5% 1. Chloride (Cl) % ≤0.01% Potassium thiocyanate spectrophotometry can be used (refer to the alkali salt analysis method in ion membrane) 2. Sulfate (SO4) % ≤0.02% (Generally, barium chloride and sulfate are used for colorimetric quantification after reaction) 3. Fluorosilicate (calculated as K2SiF6) % ≤0.10% (not very clear) 4. Heavy metals (calculated as Pb) % ≤0.003% General detection method 5. Free acid (calculated as HF) ≤24.5%-26.0 % Can be titrated with acid and alkali 6. Arsenic (As) % Arsenic spot method 7. Nickel (Ni) % Butadiene copper azide spectrophotometry 8. Iron (Fe) % Orthophiloline spectrophotometry quantification 9. Weight loss on drying % Drying The above are the quantitative principles and methods that I think of. I am not very familiar with this product. I suggest you contact the quality supervision department of the supplier to give you some advice.