ASTM D3827-92 (2020) pdf free.Standard Test Method for Estimation of Solubility of Gases in Petroleum and OtherOrganic Liquids.
The solubility of gases in petroleum and other organicliquids may be calculated from solubility parameters of theliquid and gas.The parameters are given for several classes ofsystems and their use illustrated. Alternative methods forestimation of solubility parameters are described.
Knowledge of gas solubility is of extreme importance inthe lubrication of gas compressors. It is believed to be asubstantial factor in boundary lubrication，where the suddenrelease of dissolved gas may cause cavitation erosion, or evencollapse of the fluid film. In hydraulic and seal oils，gasdissolved at high pressure can cause excessive foaming onrelease of the pressure.In aviation oils and fuels, the differencein pressure between take-off and cruise altitude can causefoaming in storage vessels and interrupt flow to pumps.
This test method covers a procedure for estimating theequilibrium solubility of several common gases in petroleumand synthetic lubricants，fuels, and solvents，at temperaturesbetween 0 and 488 K.
This test method is limited to systems in which polarityand hydrogen bonding are not strong enough to cause seriousdeviations from regularity. Specifically excluded are suchgases as HCl，NH3，and SO, and hydroxy liquids such asalcohols,glycols, and water. Estimating the solubility of CO,in nonhydrocarbons is also specifically excluded.
Highly aromatic oils such as diphenoxy phenyleneethers violate the stated accuracy above 363 K, at which pointthe estimate for nitrogen solubility is 43 % higher than theobservation.
Lubricants are given preference in this test method tothe extent that certain empirical factors were adjusted to thelubricant data. Estimates for distillate fuels are made from thelubricant estimates by a further set of empirical factors, and areless accurate. Estimates for halogenated solvents are made as ifthey were hydrocarbons, and are the least accurate of the three.1.5 The values stated in SI units are to be regarded as thestandard. The values in parentheses are for information only.1.6 This standard does not purport to address all of thesafety concerns，if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety，health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.7 This international standard was developed in accor-dance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards，Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.ASTM D3827 pdf download.