Hydrofluoric Acid

We are offering hydrofluoric acid. Product identification cas no. 7664-39-3 einecs no. 231-634-8 formula hf mol wt. 20.01 h.s.code 2811.11 toxicity synonyms hydrogen fluoride; etching acid; ahf; fluorohydric acid; fluoric acid; hf acid; acide fluorhydrique (french); acido fluoridrico (italian); fluorowodor (polish); fluorwasserstoff (german); fluorwaterstof (dutch); raw materials classification physical and chemical properties (anhydrous) physical state clear, colorless, corrosive fuming liquid melting point -84 c boiling point 19.5 c specific gravity 0.97 solubility in water miscible ph vapor density 2.21 autoignition nfpa ratings health: 4 ; flammability: 0; reactivity: 1 refractive index flash point not flammable stability stable under ordinary conditions general description & applications hydrofluoric acid is the aqueous solution of hydrogen fluoride which is gas at room temperature (boiling point: 19 c). The pure hydrogen fluoride is a strong acid, it reacts violently with bases and is corrosive. It reacts violently with metals, glass, some forms of plastic, rubber, and coatings. Hf exists in complex of h6f6, due to hydrogen binding. The aqueous solution of hydrogen fluoride (hydrofluoric acid) is a weak acid as the high strength of hydrogen-fluorine bonds does not allow complete are dissociation with water. It is a highly corrosive, fuming, and hazardous substance that liquid and vapor can cause severe burns. Hf is prepared from the reaction of concentrated sulfuric acid on fluospar (a mineral composed of calcium fluoride, caf2). Hydrofluoric acid is used as the catalyst of refinery alkylation. the term alkylation in petroleum refinery field is for the reaction of low olefins (typically butene) anf isoparaffins (typically isobutane) to form higher isoparaffins. Hydrofluoric acid is capable of dissolving inorganic oxides including glass (sio2), which offers following applications: