erucyl bis(2-hydroxyethyl)methylammonium bromide | 1235579-14-2

• 分子结构分类: 有机化合物 - 有机氮化合物
• 英文名称: erucyl bis(2-hydroxyethyl)methylammonium bromide
• 英文别名: [(Z)-docos-13-enyl]-bis(2-hydroxyethyl)-methylazanium;bromide
• CAS: 1235579-14-2
• 化学式: Br*C₂₇H₅₆NO₂
• 分子量: 506.651
• InChiKey: SJNSDBSUZWDODY-GMFCBQQYSA-M

计算性质

• 辛醇/水分配系数(LogP)：
  4.02
• 重原子数：
  31
• 可旋转键数：
  24
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.93
• 拓扑面积：
  40.5
• 氢给体数：
  2
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  erucyl bromide 、 N-甲基二乙醇胺 以 乙酸乙酯 为溶剂， 反应 24.0h， 生成 erucyl bis(2-hydroxyethyl)methylammonium bromide
  参考文献：
  名称：

  Synthesis and solution properties of cationic gemini surfactants with long unsaturated tails

  摘要：

  Gemini surfactants 22:1-s-22:1, where s = 2 and 6 methylene groups and 22:1 refer to erucyl dimethylammonium bromide chains, together with the monomeric surfactant erucyl bis-(hydroxyethyl) methylammonium bromide (EHAB) which has the same long unsaturated tails with gemini surfactants, were synthesized and characterized and solution properties of these surfactants were investigated using surface tension, conductivity and viscosity measurement. It has been found that the critical micelle concentration (cmc) values of 22:1-2-22:1 and 22:1-6-22:1 are 15.4 and 8.3 mu M, respectively, less than the CMC value of EHAB (38 mu M). On the other hand, the surface tension of 22:1-2-22:1 and 22:1-6-22:1 at cmc are 40.9 and 42.4, respectively, greater than the surface tension of EHAB (30.9 at cmc). Both 22:1-2-22:1 and 22:1-6-22:1 have nearly the same value of a(o) (the minimum head group areas per surfactant molecule at the aqueous solution/air interface), which is almost the half value of ao corresponding to EHAB. On the other hand, the ionization degree alpha of micelles of both 22:1-2-22:1 and 22:1-6-22:1 is approximately twice the value of alpha corresponding to micelles of EHAB. Though 22:1-2-22:1 has more similarity with 22:1-6-22:1 rather than EHAB as presented above, 22:1-2-22:1 in water cannot enhance the viscosity of the solution significantly in the presence of salt. In contrast, both 22:1-6-22:1 and EHAB in water can give rise to highly viscoelastic or gel-like solutions even at the high temperature in the presence of salt. In particular, 22:1-6-22:1 has proved to be a more efficient candidate for high temperature rheology-control applications than EHAB. The effect of salt upon the viscosity of 22:1-6-22:1 in aqueous solution is significant. The most proper ratio of 22:1-6-22:1/NaSal for enhancing the viscosity of solution has been proved to be 0.7. (C) 2010 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.susc.2010.03.033

文献信息

• Drag Reducing Agents and Methods of Using Thereof
  申请人：Ohio State Innovation Foundation

  公开号：US20200284277A1

  公开（公告）日：2020-09-10

  Disclosed are compounds that exhibit switchable turbulent drag reduction as well as aqueous compositions comprising these compounds. Also disclosed are methods of using these compounds and compositions as drag reducers.