应用化学 ›› 2020, Vol. 37 ›› Issue (7): 810-815.DOI: 10.11944/j.issn.1000-0518.2020.07.200008

• 研究论文 • 上一篇    下一篇

多种分析方法测定邻氯代苯亚甲基丙二腈的纯度

汪海涛*, 刘海锋, 刘艳, 赵文博, 高润利, 段晶钟, 张远鹏   

  1. 国民核生化防护国家重点实验室 北京 102205
  • 收稿日期:2020-01-06 出版日期:2020-07-01 发布日期:2020-07-07
  • 通讯作者: 汪海涛,研究员; Tel:010-66758548; E-mail:dr_wht@163.com; 研究方向:危险化学品分析检测与无害化处理
  • 基金资助:
    国家自然科学基金资助项目(21876202)、国家重大科学仪器设备开发专项(2013YQ060615)

Determination of the Purity of o-Chlorobenzylidene Malononitrile by Multiple Analysis Methods

WANG Haitao*, LIU Haifeng, LIU Yan, ZHAO Wenbo, GAO Runli, DUAN Jingzhong, ZHANG Yuanpeng   

  1. State Key Laboratory of NBC Protection for Civilian,Beijing 102205,China
  • Received:2020-01-06 Published:2020-07-01 Online:2020-07-07
  • Contact: WANG Haitao, professor; Tel:010-66758548; E-mail:dr_wht@163.com; Research interests:detection and harmless disposition of hazard chemicals
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.21876202), the National Major Scientific Instrument and Equipment Development Project (No.2013YQ060615)

摘要: 采用差示扫描量热单峰法对邻氯代苯亚甲基丙二腈(西埃斯)的纯度进行了测定,通过对升温速率的优化,采用密闭不锈钢耐压池,降低了西埃斯本身挥发性的影响,获得了不同质量样品的纯度值,并与高效液相色谱、气相色谱-质谱和核磁共振等方法的测定结果进行了比较。结果表明:差示扫描量热单峰法、高效液相色谱法、气相色谱质谱法和核磁共振法测定的纯度值分别为99.89%、99.92%、99.25%和95.0%,测定结果最大相差4.92%。 并讨论了不同分析方法产生偏差的原因。

关键词: 西埃斯, 差示扫描量热, 高效液相色谱, 核磁共振, 纯度

Abstract: The purity of o-chlorobenzylidene malononitrile (CS) was measured by differential scanning calorimeter (DSC) using the monopeak method. Considering the volatility of CS, the experiment was conducted by optimization of different heating rates and different qualities. Meanwhile, the purity of CS was also tested by high performance liquid chromatography (HPLC), gas chromatography-mass spectrometry (GC-MS) and nuclear magnetic resonance spectroscopy (NMR). We compared their difference. The purities of CS are 99.89%, 99.92%, 99.25%, and 94.0% by DSC, HPLC, GC-MS and NMR, respectively, and the maximum discrepancy is 4.92%. We also discuss the reason for the differences.

Key words: 2-chlorobenzalmalononitrile, differential scanning calorimeter, high performance liquid chromatography, nuclear magnetic resonance, purity