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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Hydrofluoric acid acute toxicity: cause nasal, pharynx, throat chronic inflammation, severe cases may have nasal septum perforation. Bone damage can cause fibrotic bone disease. Hydrogen fluoride can penetrate the skin to the deep penetration, the formation of necrosis and ulcers, and difficult to cure. Rabbits inhaled 3.3 ~ 42 mg/m3, an average of 20 mg/m3, after 1 to 5.5 months, there may be mucosal irritation, weight loss, difficulty breathing, hemoglobin reduction, reticulocyte increased, some animal deaths. 

Metabolism: hydrofluoric acid's gas, vapor or dust form through the respiratory tract or gastrointestinal tract into the body. Hydrofluoric acid is soluble, absorbs faster, is absorbed quickly into the blood circulation, about 75% and albumin combined with the operation. Fluoride in the body mainly distributed in the aorta, heart, lung, liver, spleen, kidney and other soft tissue. It can also pass through the placental barrier. When the pH increases and the calcium ion concentration increases, the amount of fluoride and plasma protein binding increased. In addition, high-fat foods will promote the storage of fluoride in the body. The body of fluoride mainly with the urine, the adult body was absorbed about half of the amount of fluoride from the urine; industrial exposure to high concentrations of those who are often in the disengagement after exposure to excessive fluoride in the urine, sustainable for several years.

Poisoning mechanism: Fluoride is the most active element of halogen elements. Fluoride ions with a strong negative charge, combined with the hydrogen ions are not easy to separate. This less ionized feature makes it easy to pass through the intact skin and lipid barrier, into the subcutaneous deep tissue, fluoride ions from the hydrofluoric acid dissociated with calcium and magnesium ions to form insoluble fluoride salt; and after separation of the hydrogen ions are caused by local acid burns. Fluoride ion can still dissolve the cell membrane, causing epidermis, dermis, subcutaneous tissue, and even muscle liquefaction necrosis. When it comes to bones, fluoride ions and bone calcium combined, resulting in decalcification and other changes.