Solid-Liquid Equilibria of Musk Ketone, Musk Xylene and 1,3-Dimethyl-2,4-Dinitro-5-Tert-Butyl Benzene

The solid-liquid equilibria of musk ketone + musk xylene, musk xylene +l,3-dimethyl-2,4-dinitro-5-tert-butyl benzene are measured by differential scanning calorimeter (DSC), these systems are proved to be simple eutectics. Moreover the melting points and the fusion enthalpies of musk ketone, musk xylene and 1,3-dimethyl-2,4-dinitro-5-tert-butyl benzene are also measured by the DSC. These solid-liquid equilibrium data and the heats of fusion are reported for the first time. Then UNIFAC model is used to correlate the sofid-liquid equilibrium data. It is shown that the solid-liquid equilibria of musk systems can be predicted by the UNIFAC model.

磺胺醋酰钠的合成优化

探索提高磺胺醋酰钠收率的方法,以提高实验室教学效果。在以磺胺和醋酐为主要原料合成磺胺醋酰钠的基础上,加入4-二甲氨基吡啶进行催化反应,得到白色结晶6.82g,最终收率为57.69%。说明采用这种制备磺胺醋酰钠的方法效率更高。