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IJCT Vol.17(3) [May 2010] >

Title: Synthesis, characterization and physical properties studies of an anionic surfactant
Authors: Verma, Anupam
Purkait, Mihir Kumar
Keywords: Anionic surfactant
Critical micelle concentration
Surface tension
Krafft point
Issue Date: May-2010
Publisher: CSIR
Abstract: An anionic surfactant, sodium octadecyl sulfate was synthesized from non-toxic n-octadecanol using chlorosulfonic acid as the sulfating agent. The synthesized surfactant was characterized by melting point, FT-IR, 1H-NMR and ESI-Mass spectroscopic studies. Physical properties of the surfactant like Krafft point, surface tension, conductivity, scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX) and powder X-ray diffraction (XRD) have also been studied. The surface tension and critical micelle concentration (CMC) were found to be around 48 mN/m and 0.2 mM at 30°C, respectively. Both CMC and surface tension value decreased with increase in temperature. CMC decreased from 0.2 to 0.1 mM when temperature increased from 30 to 50oC. The Krafft point is 56°C and the melting point is 209oC.
Page(s): 233-237
ISSN: 0975-0991 (Online); 0971-457X (Print)
Source:IJCT Vol.17(3) [May 2010]

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