calcium dodecyl sulfate | 4780-52-3

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 有机硫酸及其衍生物
• 英文名称: calcium dodecyl sulfate
• 英文别名: Calcium;dodecyl sulfate
• CAS: 4780-52-3
• 化学式: 2C₁₂H₂₅O₄S*Ca
• 分子量: 570.866
• InChiKey: PXWVHPKPMCOFLA-UHFFFAOYSA-M

计算性质

• 辛醇/水分配系数(LogP)：
  3.0
• 重原子数：
  18
• 可旋转键数：
  11
• 环数：
  0.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  74.8
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  草酸二甲酯 、 水 、 calcium dodecyl sulfate 在 tetradecyltrimethylammonium bromide 作用下， 以 水 为溶剂， 生成 calcium oxalate monohydrate
  参考文献：
  名称：

  Preparation of Calcium Oxalate by Vesicle Modification in the Catanionic Surfactant System CDS/TTABr/H₂O

  摘要：

  In conventional cationic-anionic (catanionic) surfactant mixtures with excess monovalent salt, two lamellar phase (L-alpha) regions are usually observed in both the cation-rich and anion-rich solutions, and precipitates form when there is an equal molar ratio of the cationic and anionic surfactants. The phase- and temperature-dependent behavior of the calcium dodecyl sulfate (CDS)-tetradecyltrimethylammonium bromide (TTABr)-water system with excess CaBr2 is reported. A birefringent L-alpha-phase is observed in the cation-rich solution while the precipitates in both the anion-rich and the cation-rich regions. The introduction of the Ca2+ ion is proposed to alter the electrostatic shielding of the surfactant headgroups. Stable vesicles were characterized by TEM and rheology. The formation of the vesicles is driven by electrostatic and hydrophobic interactions between the cationic and anionic surfactants. The results froth TEM show that the temperature markedly influences the molecular interactions and changes the structure of molecular bilayers, leading to the instability of the vesicles. The vesicles were used to prepare microcrystals of calcium oxalate monohydrate (CaC2O4 center dot H2O) by adding dimethyl oxalate to L-alpha solution. X-ray diffraction and scanning electron microscopy indicate that the vesicle phases play an important role in affecting the formation and growth of the CaC2O4 crystals. Namely, the microcrystals formed in the reaction are mainly bricklike (dodecahedrons) and starlike (icositetrahedrons). The two morphologies have not been previously observed in COM. Furthermore, they are larger than those prepared without surfactant, which may also explain a role for surfactants in calcium oxalate biomineralization.

  DOI：

  10.1021/jp908736d

文献信息

• Preparation of Calcium Oxalate by Vesicle Modification in the Catanionic Surfactant System CDS/TTABr/H₂O
  作者：Renhao Dong、Rui Weng、Yingying Dou、Li Zhang、Jingcheng Hao

  DOI：10.1021/jp908736d

  日期：2010.2.18

  In conventional cationic-anionic (catanionic) surfactant mixtures with excess monovalent salt, two lamellar phase (L-alpha) regions are usually observed in both the cation-rich and anion-rich solutions, and precipitates form when there is an equal molar ratio of the cationic and anionic surfactants. The phase- and temperature-dependent behavior of the calcium dodecyl sulfate (CDS)-tetradecyltrimethylammonium bromide (TTABr)-water system with excess CaBr2 is reported. A birefringent L-alpha-phase is observed in the cation-rich solution while the precipitates in both the anion-rich and the cation-rich regions. The introduction of the Ca2+ ion is proposed to alter the electrostatic shielding of the surfactant headgroups. Stable vesicles were characterized by TEM and rheology. The formation of the vesicles is driven by electrostatic and hydrophobic interactions between the cationic and anionic surfactants. The results froth TEM show that the temperature markedly influences the molecular interactions and changes the structure of molecular bilayers, leading to the instability of the vesicles. The vesicles were used to prepare microcrystals of calcium oxalate monohydrate (CaC2O4 center dot H2O) by adding dimethyl oxalate to L-alpha solution. X-ray diffraction and scanning electron microscopy indicate that the vesicle phases play an important role in affecting the formation and growth of the CaC2O4 crystals. Namely, the microcrystals formed in the reaction are mainly bricklike (dodecahedrons) and starlike (icositetrahedrons). The two morphologies have not been previously observed in COM. Furthermore, they are larger than those prepared without surfactant, which may also explain a role for surfactants in calcium oxalate biomineralization.