ASTM-D7462 2008

$40.63

D7462-08 Standard Test Method for Oxidation Stability of Biodiesel (B100) and Blends of Biodiesel with Middle Distillate Petroleum Fuel (Accelerated Method)

Published By	Publication Date	Number of Pages
ASTM	2008	6

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Categories: 75.160.20 - Liquid fuels, ASTM

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Description

ASTM D7462-08

Historical Standard: Standard Test Method for Oxidation Stability of Biodiesel (B100) and Blends of Biodiesel with Middle Distillate Petroleum Fuel (Accelerated Method)

ASTM D7462

Scope

1.1 This test method covers a measurement of the oxidation stability of biodiesel (B100) and blends of biodiesel with middle distillate petroleum fuels under specified oxidizing conditions at 95°C. Specifically, the oxidation stability is assessed by the formation and measurement of insoluble degradation materials.

Note 1—Biodiesel B100, composed of alkyl esters, can have good solubility for some products of oxidative degradation. Thus some B100 samples could undergo significant degradation, but show little or no sediment formation. By contrast, many petroleum diesel fuels have relatively poor solubility for products of oxidative degradation, so Bxx blends, such as B20, could show higher sediment levels. Refer to Appendix X1 for a suggested paraffinic dilution procedure to evaluate oxidative degradation of B100 for degradation materials that are soluble in B100, but insoluble in iso-octane.

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

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Keywords

adherent insolubles; biodiesel fuel; filterable insolubles; oxidation stability

ICS Code

ICS Number Code 75.160.20 (Liquid fuels)

DOI: 10.1520/D7462-08

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents Terminology Summary of Test Method
2	Significance and Use Interferences Apparatus Reagents and Materials
3	Samples and Sampling FIG. 1
4	Preparation of Apparatus Procedure FIG. 2
5	Calculation Report Precision and Bias Keywords
6	X1. ISOOCTANE INSOLUBLES (OPTIONAL ADDITIONAL PROCEDURE FOR AGED SAMPLE) X1.1 Introduction X1.2 Procedure X1.3 Calculation X1.4 Report

Additional information

Standard Title	D7462-08 Standard Test Method for Oxidation Stability of Biodiesel (B100) and Blends of Biodiesel with Middle Distillate Petroleum Fuel (Accelerated Method)
Published Code	ASTM
Publication Date	2008
Pages Count	6
ICS Codes	75.160.20 - Liquid fuels