一、前言橡胶用塑解剂五氯硫酚的元素测定值、熔点测定值及红外谱图等均有文献报道,而未见有五氯硫酚的纯度及其测定方法的报道。为了满足研制、生产的需要,有人建立过硝酸银沉淀法。此法是可行的,但需用二种标准溶液,滴定手续多,尤其要使用毒性大的硝基苯作溶剂。 I. Introduction Rubber peptizer pentachlorothiophenol elemental determination of the melting point of the measured value and the infrared spectrum are reported in the literature, but no purity of the chlorine pentachlorothiophene and its determination of the method reported. In order to meet the needs of the development, production, it was established silver nitrate precipitation method. This method is feasible, but need to use two standard solutions, titration procedures and more, in particular, to use toxic nitrobenzene as a solvent.