Work Item
ASTM WK77442

Revision of D6751-20a Standard Specification for Biodiesel Fuel Blend Stock (B100) for Middle Distillate Fuels


The original specification for cetane number in D6751 had no immediate technical basis except that it aligned with the NCWM Premium Diesel definition at 47 and most of the fuels met this minimum. Given that the only controlling factor for the cetane number of the ester is the fat source used as the feed-stock, some biodiesel will have a resultant cetane number below 47 but still be a very high quality fuel. This ballot attempts to align the biodiesel cetane number specification to that in D975 at 40., a performance-based number which has served the industry for decades. This will allow additional feed-stocks to be used to produce a high quality fuel, especially as the pool for these feed-stocks becomes narrower.


Developed by Subcommittee: D02.E0

Committee: D02

Staff Manager: Alyson Fick

Work Item Status

Date Initiated: 06-21-2021

Technical Contact: Shawn Broughton

Item: 002

Ballot: D02.E0 (21-05)

Status: Will Reballot Item

Item: 001

Ballot: D02.E0 (22-05)

Status: In Balloting