Process NMR

Incomplete Esterification of FAME Biodiesel

Incomplete transesterification of vegetable oil to FAME due to low concentrations of methanol or caustic leads to a biodiesel that contains Free Fatty Acids (FFA), glycerol, triglycerides (TG), and partially converted glycerides (DG and MG):
Incomplete transestrification of vegetable oil to FAME due to low concentrations of methanol or caustic leads to a biodiesel that contains Free Fatty Acids (FFA), glycerol as well as partially converted glycerol (DG and MG)

Compared to a fully converted FAME:
Compared to a fully converted FAME
 
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