ASTM WK73554

    New Test Method for Standard Test Method for Methyl Hydrogen Content of Hydrocarbon Oils by High Resolution Nuclear Magnetic Resonance Spectroscopy

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    Developed by Subcommittee: D02.04.0F | Committee D02 | Contact Staff Manager



    WK73554

    1. Scope

    1.1 This test method covers the determination of the total methyl hydrogen content of unadditized base stock (lubricating oils) hydrocarbon oils using high-resolution nuclear magnetic resonance (NMR) spectrometers that are completely soluble in chloroform at ambient temperature. 1.2 The reported units are mole percent methyl hydrogen atoms. For pulse Fourier transform (FT) spectrometers, the detection limit is typically 0.1 % mol hydrogen atoms. The interim precision is applicable in the range 20.5 to 38.7 % mol hydrogen.


    Keywords

    methyl hydrogen content; continuous wave; Fourier transform; hydrocarbon oils; lubricant base stocks; NMR; nuclear:magnetic resonance spectroscopy

    Rationale

    This is a new test method using H-NMR technique to determine the methyl hydrogen content which is a characteristic likely applicable for base oil interchange.

    The title and scope are in draft form and are under development within this ASTM Committee.

    Citing ASTM Standards
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    Work Item Status

    Date Initiated:
    07-10-2020

    Technical Contact:
    Frank Di Sanzo

    Status:
    Draft Under Development