ASTM D6751-18 - 1.10.2018
 
1. Scope

1.1 This specification covers four grades of biodiesel (B100) for use as a blend component with middle distillate fuels. These grades are described as follows:

1.1.1 Grade No. 1-B S15—A special purpose biodiesel blendstock intended for use in middle distillate fuel applications which can be sensitive to the presence of partially reacted glycerides, including those applications requiring good low temperature operability, and also requiring a fuel blend component with 15 ppm sulfur (maximum).

1.1.2 Grade No. 1-B S500—A special purpose biodiesel blendstock intended for use in middle distillate fuel applications which can be sensitive to the presence of partially reacted glycerides, including those applications requiring good low temperature operability, and also requiring a fuel blend component with 500 ppm sulfur (maximum).

1.1.3 Grade No. 2-B S15—A general purpose biodiesel blendstock intended for use in middle distillate fuel applications that require a fuel blend component with 15 ppm sulfur (maximum).

1.1.4 Grade No. 2-B S500—A general purpose biodiesel blendstock intended for use in middle distillate fuel applications that require a fuel blend component with 500 ppm sulfur (maximum).

1.2 This specification prescribes the required properties of diesel fuels at the time and place of delivery. The specification requirements may be applied at other points in the production and distribution system when provided by agreement between the purchaser and the supplier.

1.3 Nothing in this specification shall preclude observance of federal, state, or local regulations which may be more restrictive.

Note 1: The generation and dissipation of static electricity can create problems in the handling of distillate fuel oils with which biodiesel may be blended. For more information on the subject, see Guide D4865.

1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

 
2. Referenced Documents

D4177-22e1

Standard Practice for Automatic Sampling of Petroleum and Petroleum Products (Includes all amendments and changes 3/24/2023).

D4294-24

Standard Test Method for Sulfur in Petroleum and Petroleum Products by Energy Dispersive X-ray Fluorescence Spectrometry

D4530-25

Standard Test Method for Determination of Carbon Residue (Micro Method)

D2709-22

Standard Test Method for Water and Sediment in Middle Distillate Fuels by Centrifuge

D2880-23

Standard Specification for Gas Turbine Fuel Oils

D3117-03

Standard Test Method for Wax Appearance Point of Distillate Fuels (Withdrawn 2010)

D3120-25

Standard Test Method for Trace Quantities of Sulfur in Light Liquid Petroleum Hydrocarbons by Oxidative Microcoulometry

D3242-23

Standard Test Method for Acidity in Aviation Turbine Fuel

D3828-16a(2021)

Standard Test Methods for Flash Point by Small Scale Closed Cup Tester (Includes all amendments and changes 7/26/2021).

D7397-21

Standard Test Method for Cloud Point of Petroleum Products and Liquid Fuels (Miniaturized Optical Method)

D7501-22

Standard Test Method for Determination of Fuel Filter Blocking Potential of Biodiesel Fuel Blendstock (B100) by Cold Soak Filtration Test (CSFT)

D7668-25

Standard Test Method for Determination of Derived Cetane Number (DCN) of Diesel Fuel Oils—Ignition Delay and Combustion Delay Using a Constant Volume Combustion Chamber Method

D7689-21

Standard Test Method for Cloud Point of Petroleum Products and Liquid Fuels (Mini Method)

40 CFR Part 79

Registration of Fuels and Fuel Additives Section 211(b) Clean Air Act Available from U.S. Government Printing Office Superintendent of Documents, 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401.

AOCS Standard Procedure Ck 2-09 Available from AOCS Headquarters, 2710 S. Boulder, Urbana, IL 61802–6996. Download Product Code: MC-CK209 from www.aocs.org.

UOP 389

Trace Metals in Oils by Wet Ashing and ICP-OES Available from ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA. Visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org.

Trace Metals in Petroleum Products or Organics by AAS

EN 14105

Fat and Oil DerivativesFatty Acid Methyl Esters (FAME)Determination of Free and Total Glycerol and Mono-, Di-, Triglyceride Contents (Reference Method) Available from the National CEN Members listed on the CEN website (www.cenorm.be) or from the CEN/TC19 secretariat (astm@nen.nl).

Fat and Oil DerivativesFatty Acid Methyl Esters (FAME)Determination of Methanol Content

Fat and Oil DerivativesFatty Acid Methyl Esters (FAME)Determination of Oxidation Stability (Accelerated Oxidation Test)

EN 14538

Fat and Oil DerivativesFatty Acid Methyl Esters (FAME)Determination of Ca, K, Mg and Na Content by Optical Emission Spectral Analysis with Inductively Coupled Plasma (ICP OES)

EN 15751

Automotive FuelsFatty Acid Methyl Ester (FAME) Fuel and Blends with Diesel FuelDetermination of Oxidation Stability by Accelerated Oxidation Method

D6217-21e1

Standard Test Method for Particulate Contamination in Middle Distillate Fuels by Laboratory Filtration (Includes all amendments and changes 1/7/2026).

D7345-23

Standard Test Method for Distillation of Petroleum Products and Liquid Fuels at Atmospheric Pressure (Micro Distillation Method)

D5772-21

Standard Test Method for Cloud Point of Petroleum Products and Liquid Fuels (Linear Cooling Rate Method)

D5773-21

Standard Test Method for Cloud Point of Petroleum Products and Liquid Fuels (Constant Cooling Rate Method)

D5453-25

Standard Test Method for Determination of Total Sulfur in Light Hydrocarbons, Spark Ignition Engine Fuel, Diesel Engine Fuel, and Engine Oil by Ultraviolet Fluorescence

D5771-21

Standard Test Method for Cloud Point of Petroleum Products and Liquid Fuels (Optical Detection Stepped Cooling Method)

D7344-17a(2025)

Standard Test Method for Distillation of Petroleum Products and Liquid Fuels at Atmospheric Pressure (Mini Method) (Includes all amendments and changes 11/21/2025).

D6450-16a(2021)

Standard Test Method for Flash Point by Continuously Closed Cup (CCCFP) Tester (Includes all amendments and changes 7/27/2021).

D6469-24

Standard Guide for Microbial Contamination in Fuels and Fuel Systems

D6584-21

Standard Test Method for Determination of Total Monoglycerides, Total Diglycerides, Total Triglycerides, and Free and Total Glycerin in B-100 Biodiesel Methyl Esters by Gas Chromatography

D6890-25

Standard Test Method for Determination of Ignition Delay and Derived Cetane Number (DCN) of Diesel Fuel Oils by Combustion in a Constant Volume Chamber

D7039-24

Standard Test Method for Sulfur in Gasoline, Diesel Fuel, Jet Fuel, Kerosine, Biodiesel, Biodiesel Blends, and Gasoline-Ethanol Blends by Monochromatic Wavelength Dispersive X-ray Fluorescence Spectrometry

D4737-21

Standard Test Method for Calculated Cetane Index by Four Variable Equation

D4865-23

Standard Guide for Generation and Dissipation of Static Electricity in Petroleum Fuel Systems

D4057-22

Standard Practice for Manual Sampling of Petroleum and Petroleum Products

D4951-14(2019)

Standard Test Method for Determination of Additive Elements in Lubricating Oils by Inductively Coupled Plasma Atomic Emission Spectrometry

D130-26

Standard Test Method for Corrosiveness to Copper from Petroleum Products by Copper Strip Test

D189-24

Standard Test Method for Conradson Carbon Residue of Petroleum Products

D445-26

Standard Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)

D93-26

Standard Test Methods for Flash Point by Pensky-Martens Closed Cup Tester

D524-15(2025)e1

Standard Test Method for Ramsbottom Carbon Residue of Petroleum Products (Includes all amendments and changes 8/11/2025).

D664-24

Standard Test Method for Acid Number of Petroleum Products by Potentiometric Titration

D874-23

Standard Test Method for Sulfated Ash from Lubricating Oils and Additives

D974-22

Standard Test Method for Acid and Base Number by Color-Indicator Titration

D975-26c

Standard Specification for Diesel Fuel (Includes all amendments and changes 7/20/2026).

D976-21e1

Standard Test Method for Calculated Cetane Index of Distillate Fuels (Includes all amendments and changes 2/23/2023).

D1160-24

Standard Test Method for Distillation of Petroleum Products at Reduced Pressure

D1266-18

Standard Test Method for Sulfur in Petroleum Products (Lamp Method) (Withdrawn 2025)

D1796-22

Standard Test Method for Water and Sediment in Fuel Oils by the Centrifuge Method (Laboratory Procedure)

D2274-14(2019)

Standard Test Method for Oxidation Stability of Distillate Fuel Oil (Accelerated Method)

D2500-23

Standard Test Method for Cloud Point of Petroleum Products and Liquid Fuels

D2622-26

Standard Test Method for Sulfur in Petroleum Products by Wavelength Dispersive X-ray Fluorescence Spectrometry

D613-26

Standard Test Method for Cetane Number of Diesel Fuel Oil