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  • ASTM D 7157 : 2018

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    Standard Test Method for Determination of Intrinsic Stability of Asphaltene-Containing Residues, Heavy Fuel Oils, and Crude Oils (n-Heptane Phase Separation; Optical Detection)

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  01-02-2019

    Publisher:  American Society for Testing and Materials

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    1.1This test method covers a procedure for quantifying the intrinsic stability of the asphaltenes in an oil by an automatic instrument using an optical device.

    1.2This test method is applicable to residual products from thermal and hydrocracking processes, to products typical of Specifications D396 Grades No. 5L, 5H, and 6, and D2880 Grades No. 3-GT and 4-GT, and to crude oils, providing these products contain 0.5 % by mass or greater concentration of asphaltenes (see Test Method D6560).

    1.3This test method quantifies asphaltene stability in terms of state of peptization of the asphaltenes (S-value), intrinsic stability of the oily medium (So) and the solvency requirements of the peptized asphaltenes (Sa).

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

    1.5This 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.

    1.6This 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.

    General Product Information - (Show below) - (Hide below)

    Committee D 02
    Document Type Test Method
    Publisher American Society for Testing and Materials
    Status Current
    Supersedes

    Standards Referencing This Book - (Show below) - (Hide below)

    ASTM D 6792 : 2021 : REV A Standard Practice for Quality Management Systems in Petroleum Products, Liquid Fuels, and Lubricants Testing Laboratories
    ASTM D 4175 : 2020 : REV B Standard Terminology Relating to Petroleum Products, Liquid Fuels, and Lubricants
    ASTM D 396 : 2020 Standard Specification for Fuel Oils
    ASTM D 396 : 1998 Standard Specification for Fuel Oils
    ASTM D 4057 : 1981 : EDT 2 Standard Practice for Manual Sampling of Petroleum and Petroleum Products
    ASTM D 6792 : 2021 : REV B Standard Practice for Quality Management Systems in Petroleum Products, Liquid Fuels, and Lubricants Testing Laboratories
    ASTM D 4175 : 2001 : EDT 1 Standard Terminology Relating to Petroleum, Petroleum Products, and Lubricants
    ASTM D 4175 : 2020 : REV B : EDT 1 Standard Terminology Relating to Petroleum Products, Liquid Fuels, and Lubricants
    ASTM D 4175 : 2002 Standard Terminology Relating to Petroleum, Petroleum Products, and Lubricants
    ASTM D 2880 : 2018 Standard Specification for Gas Turbine Fuel Oils
    ASTM D 2880 : 2020 Standard Specification for Gas Turbine Fuel Oils
    ASTM D 6792 : 2020 Standard Practice for Quality Management Systems in Petroleum Products, Liquid Fuels, and Lubricants Testing Laboratories
    ASTM D 6792 : 2021 Standard Practice for Quality Management Systems in Petroleum Products, Liquid Fuels, and Lubricants Testing Laboratories
    ASTM D 6792 : 2021 : REV C Standard Practice for Quality Management Systems in Petroleum Products, Liquid Fuels, and Lubricants Testing Laboratories
    ASTM D 2880 : 2015 Standard Specification for Gas Turbine Fuel Oils
    ASTM D 396 : 2021 Standard Specification for Fuel Oils
    ASTM D 4870 : 1999 Standard Test Method for Determination of Total Sediment in Residual Fuels
    ASTM D 396 : 2009 Standard Specification for Fuel Oils
    ASTM D 6560 : 2000 Standard Test Method for Determination of Asphaltenes (Heptane Insolubles) in Crude Petroleum and Petroleum Products
    ASTM D 6792 : 2002 Standard Guide for A Quality System in Petroleum Products and Lubricants Testing Laboratories
    ASTM D 2880 : 2014 : REV A Standard Specification for Gas Turbine Fuel Oils
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