ASTM-D2878 2009

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D2878-95(2009) Standard Test Method for Estimating Apparent Vapor Pressures and Molecular Weights of Lubricating Oils

Published By	Publication Date	Number of Pages
ASTM	2009	6

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Description

ASTM D2878-95-Reapproved2009

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

ASTM D2878

Scope

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 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 warning statements, see 6.2, 7.1, 8.2, and Annex A2.

Keywords

lubricating oils; molecular weight; vapor pressure; Evaporation loss; Lubricating oils; Molecular weight; Synthetic fluids; Vapor pressure (VPx)–petroleum products

ICS Code

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

DOI: 10.1520/D2878-95R09

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents Terminology
2	Summary of Test Method Significance and Use Apparatus Calibration of Equipment Procedure
3	Determination of Molecular Weight and Apparent Vapor Pressure FIG. 1
4	Calculations Report Precision TABLE 1 TABLE 2
5	Keywords A1. APPARATUS A1.1 A1.2 A2. WARNING STATEMENTS A2.1 Compressed Air A2.2 m-Terphenyl

Additional information

Standard Title	D2878-95(2009) Standard Test Method for Estimating Apparent Vapor Pressures and Molecular Weights of Lubricating Oils
Published Code	ASTM
Publication Date	2009
Pages Count	6