The following link to ASTM web-site will lead you to the Standard Specification for Biodiesel Fuel Blend Stock (B100) for Middle Distillate Fuels, D 6751-07.

You may search for it by typing in D 6751, there is a $35.00 fee for printing a hard copy of the document.

http://www.astm.org/cgi-bin/SoftCart.exe/NEWSITE_JAVASCRIPT/index.shtml?E+mystore