Pure bio-based diesel (B100)

Pure bio-based diesel or biodiesel (B100) is defined as biodiesel containing a minimum of 96.5% m/m of fatty acid methyl ester (FAME). The latest B100 specification is set in Appendix C of the GB 25199-2017 B5 (5% v/v biodiesel blended with 95% v/v conventional diesel) specification. This specification was drafted by SINOPEC’s Research Institute of Petroleum Processing, proposed by the National Energy Association (NEA), and approved and released by the General Administration of Quality, Specification, Inspection and Quarantine and the Standardization Administration of China.

Under GB 25199-2017 Appendix C, two grades of B100 with a maximum sulfur limit of 50 mg/kg and 10 mg/kg are set. Compared with the previous specification, the following properties have chang