1. The article is about how to use phosgene and p-nitrophenylamine to react in acetic ether's liquefier to produce p-nitro-phenyl isocyanate, Its best technological condition have been discussed.
   介绍用光气和对硝基苯胺在乙酸乙酯溶剂中反应来制备对硝基异氰酸苯酯的方法，并讨论了其最佳工艺条件。

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