Triazofos

Triazofos is a chemical compound used in acaricides, insecticides, and nematicides. Triazofos is a chemical compound used in acaricides, insecticides, and nematicides. Triazofos has been registered in the Federal Office of Consumer Protection and Food Safety since 1975 and authorized as an insecticide in the EU until 31 December 2004 (Commission Regulation No 2076/2002). As of 25 July 2003 it was revoked under Commission Regulation No 1336/2003. The production of triazofos began in the 1980s as a Hoechst patent by the company Bayer. In 2011 Bayer announced termination of the sale of this product, due to its poisonous properties. Triazofos can be synthesized through various reactions. A method of manufacturing triazofos produces the substance in the presence of triethylamine by reacting 1-phenyl-3-hydroxy-1H-1,2,4-triazole suspended in acetone with diethoxythiophosphoryl chloride. Another method produces the substance by the reaction of phenylhydrazine with Sodium cyanate, formamide and O,O-diethyl phosphorochlorothioate using cyanate additions, condensation and dehydrochlorination. An improved process for manufacturing triazofos uses phase transfer catalyst to achieve higher yields and purity. By comprising substituted 1-phenyl 3-hydroxy-1, 2, 4-triazole with 0, -diethylthiophosphoryl chloride in the presence of acide scavengers and 0.2% to 2.0% phase transfer catalyst at a temperature between 20-45 degrees Celsius in a suitable solvent like water. Followed by cooling and separating/extracting the aqueous layer from the organic layer by using a solvent such as xylene, toluene methylene dichloride or water for complete recovery of at least 92% triazofos purity. Triazofos is available in several forms; as an emulsifiable concentrate (40%), wettable concentrates, wettable powders (30%), ultralow-volume liquids (25%, 40%) and granules (5%) at various concentrations. Triazofos is an organophosphate pesticide used in acaricides, insecticides and nematicides. Its chemical formula is : C12H16N3O3PS containing a molar mass of 313,31 g/mol. The chemical compound is susceptible to highly toxic and flammable phosphine gas formation in the presence of strong reducing agents (such as hydrides). It belongs to the reactive groups of: Amines, Phosphines and Pyridines. Azo, Diazo, Azido, Hydrazine and Azide compounds. Esters, Sulphate Esters, Phosphate Esters, Thiophosphate Esters and Borate Esters. Liquids with these reactive groups have been known to react with mineral-based and clay-based absorbents. Furthermore, partial oxidation of the organophosphate can result in the toxic phosphorus oxides release.