碘量法测定采油用清防蜡剂中的二硫化碳  

IODOMETRIC DETERMINATION OF CARBON DISULPHIDE IN WAXING INHIBITORS/WAX REMOVERS

作　　者：潘广平[1] 周宝春[1] 杨学军[1] 张凤芹[1] 刘毅[1] 

机构地区：[1]大庆油田建设设计研究院分析室

出　　处：《油田化学》1998年第2期168-170,共3页Oilfield Chemistry

摘　　要：利用二硫化碳与碱醇液的特性反应，先使清防蜡剂中的二硫化碳与ＫＯＨ乙醇溶液反应生成黄原酸盐，再用碘量法滴定黄原酸盐，在空白试样测定中以乙醇代替碱乙醇溶液。此法克服了将碘量法直接用于油基清防蜡剂中二硫化碳的定量测定时油水不互溶、空白测定结果不准确的困难。颜色较深的清防蜡剂与碱醇液反应完全后可用水适当稀降，以方便滴定终点的判定。sing the characteristic reaction of CS2 with alkali and alcohol, the CS2 in waxing inhibitors/wax dissolvers is let react with KOHethanol solution to form a xanthogenate and the later is determined by iodometric titration. In blank experiments ethanol is added instead of KOHethanol solution. This method can be readily used to oil base waxing inhibitors/wax dissolvers even when they are dark colored. The minimal detectable amount of CS2 is 0.1%.

关 键 词：二硫化碳 定量分析 碘量法 清防蜡剂 油井 

分 类 号：TE358.2[石油与天然气工程—油气田开发工程]