STANDARD TEST METHOD FOR VAPOR PRESSURE OF PETROLEUM PRODUCTS (REID METHOD)
|Publication Date:||27 August 1982|
This test method covers a determination of vapor pressure (Note 1) of gasoline. It is also applied to volatile crude oil and other volatile petroleum products, except liquefied petroleum gases (Note 2). It is not applicable to oxygenated fuels.
NOTE 1-Because the external atmospheric pressure is counteracted by the atmospheric pressure initially present in the air chamber, the "Reid vapor pressure" is an absolute pressure at 100°F (37.8°C) in pounds-force per square inch (or kilopascals) (kPa I kN/m2). The "Reid vapor pressure" differs from the true vapor pressure of the sample due to some small sample vaporization and the presence of water vapor and air in the confined space.
NOTE 2-For determination of the vapor pressure of liquefied petroleum gases refer to Method D 1267.
NOTE 3-The values stated in inch-pound units are standard.
This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of whoever uses this standard to consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific precautionary statements, see 14.2