As biodiesel is gaining its recognition as an alternate fuel,
standards and regulatory compliance are mandatory for its
commercialisation and market introduction. There are two
major biodiesel standards that are most referred to, namely, the
American Standard Specifications for Biodiesel Fuel (B100) Blend
Stock for Distillate Fuels, ASTM D6751 and the European Standard
for Biodiesel, EN 14214. Both the standards are summarised
in Tables 1 and 2, respectively. Most of the parameters specified
in both the standards are similar or very close. The major
differences between these standards are their intended applications and the preferred test methods published by European
Committee for Standardization (CEN) and American Society for
Testing and Materials, respectively. The EN 14214 sets the
specifications and test methods for biodiesel to be used as
automotive fuel for diesel engines, in conformation with the
European Automotive Diesel Standard (EN 590) while the US
ASTM D6751 specifies the standards for biodiesel (100%) for use
as a blend component with diesel fuels