Journal of Surfactants and Detergents

, Volume 18, Issue 2, pp 365–370 | Cite as

Properties of Ethoxylated Castor Oil Acid Methyl Esters Prepared by Ethoxylation over an Alkaline Catalyst

  • Qian Zhang
  • Yongqiang Sun
  • Lifei Zhi
  • Yong Zhang
  • Martino Di Serio
Letter to the Editor


The synthesis and properties of ethoxylated castor oil acid methyl esters (ECAME) were investigated. Ethylene oxide (EO) can react directly with the ester group and hydroxyl group of castor oil acid methyl esters in the presence of an alkaline catalyst. ECAME with different average EO adduct numbers were synthesized and, through testing the degree of EO addition, it was found that only a few EO moieties (2–4) inserted into the hydroxyl group. In addition, the physicochemical properties of ECAME were studied. ECAME can be used as nonionic surfactants with good properties.


Ethoxylated castor oil acid methyl esters Ethylene oxide EO adduct position Surface tension Nonionic surfactant 



The authors acknowledge the financial support by the National Science and Technology Support Project of International (No. 2013DFA42120), International Science and Technology Cooperative Project of Shanxi Province (No. 2013081019), and Natural Science and Technology Support Project of China (No. 2012BAD32B10).


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Copyright information

© AOCS 2014

Authors and Affiliations

  • Qian Zhang
    • 1
  • Yongqiang Sun
    • 1
  • Lifei Zhi
    • 1
  • Yong Zhang
    • 1
  • Martino Di Serio
    • 2
  1. 1.China Research Institute of Daily Chemical IndustryTaiyuanPeople’s Republic of China
  2. 2.Department of Chemical SciencesUniversity of Naples Federico IINaplesItaly

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