Hydrofluoric acid (HF)

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Classification Halide (Except Chloride) CAS No. 7664-39-3 Place of Origin Shandong, China (Mainland) Grade Standard Reagent Grade Purity 40-100% color colorless It is primarily for the production of inorganic fluoride,metallurgical analysis and silicide analysisi. HF Molecular formula:HF CAS NO.:7664-39-3 Molecular weight:20.01 Properties: This product is a kind of colorless,transparent and fuming liquid, and it's the aqueous solution of HF.Its relative density is 1.128(40%),and it has pungent odour.It is a moderately strong acid.In dilute solution ,HF dissociates into ion.In concentrated solution,HF polymerizes to H2F2,and H2F2 dissociates into H2F2=H+HF2.It has strong corrosivity, and it can corrode glass and silicate resulting gaseous silicon tetrafluoride.It is extremely volatile,and it can retact with metal salts, oxides, hydroxides to produce fluorides.It doesn't corrode polyethylene and platinum. Hydrofluoric acid can not do oxidation reaction, neither do reduction reaction.It is highly toxic, and when it touches skin,skin will fester. Technical specifications: Chemical reagent HF GB/T620-1993 ITEM G.R A.R C.P HF content % ≥ 40.0 40.0 40.0 Ignition residue (sulphate)% ≤ 0.001 0.002 0.01 Chloride(CL) % ≤ 0.0005 0.001 0.005 Sulphate and sulfite(SO4) % ≤ 0.001 0.002 0.005 phosphate(PO4)% ≤ 0.0001 0.0002 0.005 Fluosilicate(SiF6) % ≤ 0.02 0.04 0.06 Fe % ≤ 0.00005 0.0001 0.0005 heavy metal (Pb) % ≤ 0.0001 0.0005 0.001 Industry HF GB7744-1998 ITEM INDEX Premium Grade First Grade Salable Grade HF-40 HF-55 HF-40 HF-55 HF content % ≥ 40.0 40.0 55.0 40.0 55.0 Fluosilicic acid content % ≥ 0.0 0.2 0.5 205.0 5.0 Non-volatile acid(H2SO4) % ≤ 0.0 0.1 0.1 1.0 2.0 Package: This product is packaged in plastic bottles or barrels,and the thickness of barrel must exceed 3mm.It should be stored in well ventilated warehouses.The temperature shouldn't exceed 30,and relative humidity should be below 85%.It should be avoided damp,heat,rain in transportation. We should unload and pack lightly to prevent the collision and inversion. Application: It is primarily for the production of inorganic fluoride,metallurgical analysis and silicide analysisi.It also can be used for glass engraving, plating, reagent,fermentation,ceramic processing, frosted light bulb production, metal casting sanding,the removal of graphite silicon, metal washing(Cubrassstainless steel and so on) and semiconductor productionGeSiand so on.

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Zibo YCY Industry & Trading Co.

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