Training of compound fotfin (PHOSPHINE)The substance fotfin activities applied for pesticides activities produce enemies it has been used for the first time by Dr. Werner Freyberg in 1930 by packing bags which contain aluminium phosphide 57% and 43% are other substances after World War II, with the production of fotfin tablets and pellets in the image the United States has begun to remove gas fotfin used. In 1958 to produce insecticides under approval by the FDA that is safe, non-toxic residues cause gas fotfin is commonly used. Especially the smoked tobaccoFor more fotfin gas from the reaction of aluminium phosphide or magnesium phosphide with water vapor in the air, as follows:Phophide + water → hydrogen phosphide + powder reaction is a chemical reaction products.AIP + 3H2O → Al (OH) 3 + PH3 or?Mg3 P2 + 3H2O → 3 Mg (OH) 2 + PH3Fossil find fossils and magnesium aluminum fly with the same insecticide is: fotfin (PH3).Magnesium fossil find would qualify the above because gases are, the faster.The properties of the fotfin (PH3) is.1. is the gas that has no color, odor, slightly khlaikrathiam.2. What is the chemical formula PH3.3. molecular weight 34.14. the heavier air 1.2 times5. the boiling point – 87.4° C6. water soluble, about 26% (by volume at 5° C).7. fotfin gas concentration will catch fire bombs.8. the reaction with metals, such as gold, copper and silver.9. toxic to insects and warm-blooded animals is very high.10. There is no toxic residue.11. Cieling concentration 0.3 ppm
การแปล กรุณารอสักครู่..