ASTM D2878-10
Standard Test Method for Estimating Apparent Vapor Pressures and Molecular Weights of Lubricating Oils

Standard No.
ASTM D2878-10
Release Date
2010
Published By
American Society for Testing and Materials (ASTM)
Status
Replace By
ASTM D2878-10(2016)
Latest
ASTM D2878-21
Scope

The vapor pressure of a substance as determined by measurement of evaporation reflects a property of the bulk sample. Little weight is given by the procedure to the presence of low concentrations of volatile impurities.

Vapor pressure, per se, is a thermodynamic property that is dependent only upon composition and temperature for stable systems. In the present method, composition changes occur during the course of the test so that the contribution of minor amounts of volatile impurities is minimized.

1.1 This test method covers a calculation procedure for converting data obtained by Test Method D972 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 500°F). However, its applicability to lubricating greases has not been established.

Note 18212;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 WARNINGMercury has been designated by many regulatory agencies as a hazardous material that can cause central nervous system, kidney and liver damage. Mercury, or its vapor, may be hazardous to health and corrosive to materials. Caution should be taken when handling mercury and mercury containing products. See the applicable product Material Safety Data Sheet (MSDS) for details and EPAs websitehttp://www.epa.gov/mercury/faq.htmfor additional information. Users should be aware that selling mercury or mercury containing products into your state or country may be prohibited by law.

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 or regulatory limitations prior to use. For specific warning statements, see 6.2, 7.1, 8.2, and Annex A2.

ASTM D2878-10 history

  • 2021 ASTM D2878-21 Standard Test Method for Estimating Apparent Vapor Pressures and Molecular Weights of Lubricating Oils
  • 2010 ASTM D2878-10(2016) Standard Test Method for Estimating Apparent Vapor Pressures and Molecular Weights of Lubricating Oils
  • 2010 ASTM D2878-10 Standard Test Method for Estimating Apparent Vapor Pressures and Molecular Weights of Lubricating Oils
  • 1995 ASTM D2878-95(2009) Standard Test Method for Estimating Apparent Vapor Pressures and Molecular Weights of Lubricating Oils
  • 1995 ASTM D2878-95(2005) Standard Test Method for Estimating Apparent Vapor Pressures and Molecular Weights of Lubricating Oils
  • 1995 ASTM D2878-95(2000)e1 Standard Test Method for Estimating Apparent Vapor Pressures and Molecular Weights of Lubricating Oils
  • 2000 ASTM D2878-95 Standard Test Method for Estimating Apparent Vapor Pressures and Molecular Weights of Lubricating Oils



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