Potassium fluoride,anhydrous
           Potassium fluoride,extra pure
           Potassium fluoride,Granular
           Silicon Dioxide
           Hydrofluoric acid
           Synthetic Cryolite
           Potassium Fluoaluminate
           Ammonium bifluoride
           Potassium Bifluoride
           Aluminium fluoride
           Sodium fluoride
           Potassium Fluorosilicate
           Fluorosilicic Acid
           Sodium silicofluoride
           Potassium Hydroxide Flakes
           Magnesium Fluoride
           Magnesium fluorosilicate
           Barium Fluoride
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Industrially, Hydrofluoric acid is an important compound used for the synthesis of chlorofluorocarbons, and in the manufacture of hydrofluoric acid. HF in pyridine is used as a synthetic reagent. Hydrofluoric acid (the solution in water) has widespread uses, some of which are: 1)Etching silicon products in the production of semiconductors, 2)Etching, frosting and polishing glassware and ceramics, 3)As a rust or stain remover in laundries, 4)On stonework surfaces, 5)Pickling stainless steel, 6)Electroplating operations, 7)As a reagent in chemical reactions, 8)Digesting rock specimens, 9)Preparation of sediments.

Hydrofluoric acid gas can be purchased in compressed gas cylinders, but these are unlikely to be encountered in the University. It can also be made in-situ by the action of sulphuric acid on fluorides. A risk assessment must be completed before any experiment of this nature Clearly any experiment of this nature should be associated with a risk assessment and one of the control measures will be confinement of the experiment to a fume cupboard. The gas released will then be captured, diluted and exhausted by the fume cupboard. Exposure in these cases is only likely if. The experiment has been done on an open bench, or The experimenter has placed his/her head in the gas stream.It is unlikely that a First Aider will encounter such a situation. However, hydrofluoric acid is used in a large number of Departments. The University Departments and Institutes known to be using HF are: 1.Archaeology, 2.McDonald, 3.Institute, 4.Chemistry, 5.Earth Sciences, 6.Engineering, 7.Geography, 8.Materials Science 9.Physics, 10.Plant Sciences. But there may be others!

Hydrofluoric acid is used in aqueous solution of varying strengths in the Departments listed above. Usage should be confined to well-ordered laboratory areas, with well-thought out and policed procedures, as outlined in the following section. About the event of hydrofluoric acid: It is due to the special nature of the reaction , it has nothing to do with the acidity. Second, the standard concentration of hydrofluoric acid used for engraving glass should be 40% -50%, school choice for students to experiment angle of 20% is no problem. Furthermore, it is not strong volatility, the used concentration is low, the amount of inhalation is minimal.