Analyzing Pentaerythritol Stearate Homologs with NMR Spectroscopy

doi:10.11938/cjmr20172612

Abstract

Abstract: A pentaerythritol stearate sample with unknown composition was analyzed by nuclear magnetic resonance (NMR) spectroscopy (i.e., ¹H NMR, quantitative ¹³C NMR, DEPT135, ¹H-¹H COSY, ¹H-¹H NOESY, ¹H-¹³C HSQC and ¹H-¹³C HMBC). The results indicated that the sample contained mainly monopentaerythritol tetrastearate, but also had small amounts of monopentaerythritol tristearate, monopentaerythritol distearate, dipentaerythritol stearate and tripentaerythritol stearate, as well as a trace amount of multipentaerythritol stearate.

Key words: nuclear magnetic resonance (NMR), pentaerythritol, stearate, multipentaerythritol, lubricant

CLC Number:

O482.53

LI Chun-fa, LIU Guang, WANG Qin, LIU Zheng. Analyzing Pentaerythritol Stearate Homologs with NMR Spectroscopy[J]. Chinese Journal of Magnetic Resonance, 2018, 35(3): 363-373.

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