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Proton Nuclear Magnetic Resonance‐Based Method for the Quantification of Epoxidized Methyl Oleate
Author(s) -
Kaur Avneet,
Bhardwaj Neha,
Kaur Amanpreet,
Abida Km,
Nagaraja Tejo Prakash,
Ali Amjad,
Prakash Ranjana
Publication year - 2021
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1002/aocs.12439
Subject(s) - high performance liquid chromatography , plasticizer , chemistry , gas chromatography , raw material , chromatography , polymer , organic chemistry
Epoxidized methyl esters (EMO) with their high oxirane ring reactivity, acts as a raw material in the synthesis of various industrial chemicals including polymers, stabilizers, plasticizers, glycols, polyols, carbonyl compounds, biolubricants etc. EMO has been generally quantified by the gas chromatography (GC) and high‐performance liquid chromatography (HPLC) techniques. Taking into the account of the limitations of these techniques, two qHNMR‐based equations have been proposed for the quantification of EMO in the mixture of EMO and methylesters (MO). The validity of the proposed method was determined using standard mixtures of MO and EMO having different molar concentrations. The developed equations have been applied on the samples of EMO prepared from oleic acid in two‐step process viz., esterification followed by epoxidation. The qHNMR‐based EMO quantification showed acceptable agreement with the results obtained from HPLC analysis.