ASTM D2779 - 92(2012)

    Standard Test Method for Estimation of Solubility of Gases in Petroleum Liquids

    Active Standard ASTM D2779 | Developed by Subcommittee: D02.L0.07

    Book of Standards Volume: 05.01

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    Significance and Use

    Knowledge of gas solubility is of extreme importance in the lubrication of gas compressors. It is believed to be a substantial factor in boundary lubrication, where the sudden release of dissolved gas may cause cavitation erosion, or even collapse of the fluid film. In hydraulic and seal oils, gas dissolved at high pressure can cause excessive foaming on release of the pressure. In aviation oils and fuels, the difference in pressure between take-off and cruise altitude can cause foaming out of the storage vessels and interrupt flow to the pumps.

    1. Scope

    1.1 This test method covers the estimation of the equilibrium solubility of several common gases encountered in the aerospace industry in hydrocarbon liquids. These include petroleum fractions with densities in the range from 0.63 to 0.90 at 288 K (59°F). The solubilities can be estimated over the temperature range 228 K (50°F) to 423 K (302°F).

    1.2 This test method is based on the Clausius-Clapeyron equation, Henry's law, and the perfect gas law, with empirically assigned constants for the variation with density and for each gas.

    1.3 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only.

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

    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

    D1298 Test Method for Density, Relative Density (Specific Gravity), or API Gravity of Crude Petroleum and Liquid Petroleum Products by Hydrometer Method

    ICS Code

    ICS Number Code 71.100.20 (Gases for industrial application)

    UNSPSC Code

    UNSPSC Code 15101500(Petroleum and distillates)

    Referencing This Standard
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    DOI: 10.1520/D2779-92R12

    Citation Format

    ASTM D2779-92(2012), Standard Test Method for Estimation of Solubility of Gases in Petroleum Liquids, ASTM International, West Conshohocken, PA, 2012,

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