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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What shall we do when the skin stained with hydrofluoric acid? Firstly, don't panic, skin contact part should be with a long time of flushing, the flushing time must guarantee more than 15 minutes, flushing also can be used with soap water to clean the skin contact site. Secondly, after flushing is completed will skin contact soaked position in a solution of calcium gluconate and soaking time shortest 2 hours, generally with burning sensation disappeared so far. Finally, go to the hospital for medical treatment. 

Hydrofluoric-hydrochloric acid mixtures have been successfully used to stimulate sandstone reservoirs for a number of years. Hydrofluoric acid (HF) has a specific reactivity with silica which makes it more effective than HC1 for use in sandstone. Kinetics of the reactions of HF have been studied to determine the related effects of reservoir composition, temperature, acid concentration and pressure on the spending rate of HF. Secondary effects from by-product formation are noted and described. Predictions are made concerning the improvement in productivity resulting from HF treatment of skin damage. The kinetic order of HF reaction in sandstone was experimentally determined to be first order, i.e., the reaction rate is proportional to concentration. Hydrofluoric acid reacts faster on calcite than on clay, which, in turn, is faster than the reaction rate of HF on sand. Static conditions retard the HF reaction rate. As HF is forced into cores, there is a temporary reduction as a function of flow rate and acid concentration. Extensive deposition of calcium fluoride in acidized cores was not observed. Although some CaF, was detected, it was not considered a major source of damage in cores containing moderate amounts of carbonate. Other fluosilicates could be potentially more dangerous than CaF, in reducing permeability.

What shall we do when skin contact part of the body with hydrofluoric acid can not be soaked calcium acid calcium solution? With gauze soaked in calcium alginate solution, it is not easy to soak parts of the wet compress. In the emergency situation of the workshop,  it can be used as a mask or head cover soaked calcium acid calcium solution wet compress.