Potassium fluoride,anhydrous
           Potassium fluoride,extra pure
           Potassium fluoride,Granular
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           Ammonium bifluoride
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           Fluorosilicic Acid
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           Magnesium fluorosilicate
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Hydrofluoric acid (HF) burns cause immediate damage and painful long-term sequellae. Traditionally, chelating agents have been used as the initial treatment for such burns. We have introduced epidermal growth factor (EGF) into an HF model to compare EGF with Ca2+ and Mg2+ treatments; 40 Sprague Dawley rats were divided into five groups. Each rat suffered a 6 × 4 cm2 burn induced by 40% HF.

EGF limited Hydrofluoric acid (HF) damage morphologically and histologically more effectively than Ca2+ or Mg2+. This finding indicates that HF treatment via growth factors may be an improvement over chelation therapy.  Group 1 had no treatment, group 2 had saline injected beneath the burn, group 3 received magnesium sulphate injections, group 4 received calcium gluconate and group 5 received EGF. Specimens were evaluated via planimetry and biopsy at intervals of 4, 8, 24 and 72 hours. Fluid losses were significantly less in the Mg2+ and EGF groups. The EGF group had the smallest burn area, least oedema, least polymorphonuclear granulocyte (PMN) infiltration, most angiogenesis and highest fibroblast proliferation of any group (P < 0·005).

Phosphorus chemical fluorine-containing waste gas as raw material for preparing hydrofluoric acid, hydrofluoric acid analysis by electrochemical analysis. Systematically investigated the amount of sulfuric acid, reaction time and stirring rate these three factors effect on the content of hydrofluoric acid. We obtain a fluorine-containing phosphorus chemical hydrofluoric acid gas preparation process conditions. The conditions: the amount of sulfuric acid 24.000g, the reaction time was 40min , stirring speed of 350r / min.