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学科主题物理化学
Thermodynamic Properties and Thermal Analysis of Deltamethrin
Wang JY(王建雅); Tan ZC(谭志诚)
会议名称8th IUPAC Conference on Chemical Thermodynamics and The 12th National Conference on Chemical Thermodynamics and Thermal Analysis
会议日期2004-8-17
2004-08-17
会议地点中国
页码498/1
部门归属十五室
主办者中国化学会
英文摘要The (S)-alpha-cyano-3-phenoxybenzyl (1R)-cis-3-(2,2-dibromovinyl)-2,2-dimethylcyclo- propane carboxylate, or named deltamethrin (C22H19Br2NO3), is one of the high effective fenpropathrin pesticides. The compound was synthesized and characterized with NMR. The purity of sample used for calorimetric study was determined to be 0.9926 % by HPLC. The molar heat capacities of the compound were measured with an automatic adiabatic calorimeter in the temperature range of 80 ~ 400 K. The experimental molar heat capacities of the sample were fitted to polynomials with the least square fittings. The deviation of the experimental data from the smoothed values in the whole region is within ± 0.2 %. A solid-liquid phase transition was observed in the experimental temperature range. The melting point, (Tm), enthalpy and entropy of fusion,(Δfus Hm) and (ΔfusSm) were determined to be 372.15±0.02K,26.73±0.02 kJ• mol -1,71.81±0.06 J• K-1• mol -1, respectively. The thermodynamic functions of the compound, [HT – H298.15], [ST – S298.15] and [GT -G298.15] were derived with a temperature interval of 5 K in the temperature range of 298.15~ 400 K. The thermal decomposition of the compound was studied by thermogravimetric analysis (TG) in the temperature range of 470~ 680 K. The TG analysis indicated that the thermal decomposition of the compound starts at 510 K and ends at 575 K; the maximum decomposition rate was observed at 556 K. The order (n), pre-exponential factor (A) and activation energy (E) of the decomposition reaction were determined to be 1.78, 1.15•109 min-1 and 603.8 kJ•mol-1, respectively.
语种中文
文献类型会议论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/111774
专题中国科学院大连化学物理研究所
通讯作者Tan ZC(谭志诚)
推荐引用方式
GB/T 7714
Wang JY,Tan ZC. Thermodynamic Properties and Thermal Analysis of Deltamethrin[C],2004:498/1.
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