ASTM D525 - 12a(2019)

    Standard Test Method for Oxidation Stability of Gasoline (Induction Period Method)

    Active Standard ASTM D525 | Developed by Subcommittee: D02.14

    Book of Standards Volume: 05.01


      Format Pages Price  
    PDF 8 $50.00   ADD TO CART
    Hardcopy (shipping and handling) 8 $50.00   ADD TO CART
    Online TrainingTraining  



    Significance and Use

    5.1 The induction period may be used as an indication of the tendency of motor gasoline to form gum in storage. It should be recognized, however, that its correlation with the formation of gum in storage may vary markedly under different storage conditions and with different gasolines.

    1. Scope

    1.1 This test method covers the determination of the stability of gasoline in finished form only, under accelerated oxidation conditions. (Warning—This test method2 is not intended for determining the stability of gasoline components, particularly those with a high percentage of low boiling unsaturated compounds, as these may cause explosive conditions within the apparatus. However, because of the unknown nature of certain samples, the pressure vessel assembly shall include a safety burst-disc in order to safeguard the operator.)

    Note 1: For measurement of oxidation stability of gasoline by measurement of potential gum, refer to Test Method D873, or IP Test Method 138.

    Note 2: The precision data were developed with gasolines derived from hydrocarbon sources only without oxygenates.

    1.2 The accepted SI unit of pressure is the kilo Pascal (kPa), and of temperature is °C.

    1.3 WARNING—Mercury has been designated by many regulatory agencies as a hazardous substance that can cause serious medical issues. Mercury, or its vapor, has been demonstrated to be hazardous to health and corrosive to materials. Use Caution when handling mercury and mercury-containing products. See the applicable product Safety Data Sheet (SDS) for additional information. The potential exists that selling mercury or mercury-containing products, or both, is prohibited by local or national law. Users must determine legality of sales in their location.

    1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

    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 (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D873 Test Method for Oxidation Stability of Aviation Fuels (Potential Residue Method)

    D4057 Practice for Manual Sampling of Petroleum and Petroleum Products

    E1 Specification for ASTM Liquid-in-Glass Thermometers


    ICS Code

    ICS Number Code 75.160.20 (Liquid fuels)

    UNSPSC Code

    UNSPSC Code 15101506(Gasoline or Petrol)


    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/D0525-12AR19

    Citation Format

    ASTM D525-12a(2019), Standard Test Method for Oxidation Stability of Gasoline (Induction Period Method), ASTM International, West Conshohocken, PA, 2019, www.astm.org

    Back to Top