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Molecular formula :KHF2 Molecular weight :78.11
Application :A dielectric for the production of anhydrous hydrogen fluoride, pure potassium fluoride, and elemental fluorine. Also used in the manufacture of optical glass, engraved glass. It can be used as a fluxing flux for silver products, wood preservatives, masking agents, catalysts for phenylalkylation, and the like.
Property :White or colorless transparent tetragonal crystal, slightly acidic odor, soluble in air, slightly soluble in alcohol, very soluble in cold water, decomposed in hot water, aqueous solution is strongly acidic, can corrode glass, toxic It is corrosive to the skin, stable in dry air, and absorbs moisture in humid air to release hydrogen fluoride. When heated to 310 ° C, HF escapes, and the vapor pressure of hydrogen fluoride to 400 ° C can reach 0.10325 MPa (latm), and the activity of molten potassium hydrogen fluoride is greater than that of potassium fluoride. poisonous. Corrosive. It should be stored in a plastic container. Specific gravity: 2.37 g/mL (25 ° C), melting point: 225-239 ° C.
CAS NO.: 7789-29-9
Project
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Indicator
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Industrial grade
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Export level
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Appearance identification
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White crystal
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White crystal
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content %
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≥98.5
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≥99.5
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Free acid %
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24.5-26
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24.5-26
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chloride(Cl) %
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≤0.05
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≤0.02
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Sulfate(SO4) %
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≤0.05
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≤0.01
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Fluorosilicate(Based on K2SiF6) %
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≤0.3
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≤0.30
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Heavy metal(In Pb) %
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≤0.005
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≤0.005
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Bulk density(20 mesh) kg/L
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0.86-0.92
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0.88-0.92
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nickel(Ni) %
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≤0.001
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≤0.001
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Ferrum(Fe) %
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≤0.02
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≤0.02
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PH(5% aqueous solution)
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2.5-2.7
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2.5-2.7
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Loss on drying(105℃/2H) %
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≤0.5
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≤0.01
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Supply reference
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Production Process
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Electrolysis
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Recrystallization refining
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Packing specification
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25KG plastic paper film four layers
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25KG plastic paper bag four layers
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Reference price(RMB) yuan/ton
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15500yuan/ton
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17500yuan/ton
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Quote validity period
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3 months
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3 months
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