ASTM D2878-95(2000)e1

    Standard Test Method for Estimating Apparent Vapor Pressures and Molecular Weights of Lubricating Oils


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    1. Scope

    1.1 This test method provides a calculation procedure for converting data obtained by Test Method D 972 to apparent vapor pressures and molecular weights. It has been demonstrated to be applicable to petroleum-based and synthetic ester lubricating oils, at temperatures of 395 to 535K (250 to 500oF). However, its applicability to lubricating greases has not been established.

    Note 1--Most lubricants boil over a fairly wide temperature range, a fact recognized in discussion of their vapor pressures. For example, the apparent vapor pressure over the range 0 to 0.1 % evaporated may be as much as 100 times that over the range 4.9 to 5.0 % evaporated.

    1.2 The values stated in SI units are to be regarded as the standard. In cases in which materials, products, or equipment are available in inch-pound units only, SI units are omitted.

    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 or regulatory limitations prior to use. For specific hazard statements, see 6.2, 7.1, and 8.2.


    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

    A240/A240M Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications

    D92 Test Method for Flash and Fire Points by Cleveland Open Cup Tester

    D972 Test Method for Evaporation Loss of Lubricating Greases and Oils

    D2503 Test Method for Relative Molecular Mass (Molecular Weight) of Hydrocarbons by Thermoelectric Measurement of Vapor Pressure

    D2595 Test Method for Evaporation Loss of Lubricating Greases Over Wide-Temperature Range

    D2883 Test Method for Reaction Threshold Temperature of Liquid and Solid Materials

    E659 Test Method for Autoignition Temperature of Chemicals


    ICS Code

    ICS Number Code 75.100 (Lubricants, industrial oils and related products)

    UNSPSC Code

    UNSPSC Code 15121500(Lubricating preparations)


    Referencing This Standard
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    DOI: 10.1520/D2878-95R00E01

    Citation Format

    ASTM D2878-95(2000)e1, Standard Test Method for Estimating Apparent Vapor Pressures and Molecular Weights of Lubricating Oils, ASTM International, West Conshohocken, PA, 2000, www.astm.org

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