ASTM-D6378 2007

$44.96

D6378-07e1 Standard Test Method for Determination of Vapor Pressure (VPX) of Petroleum Products, Hydrocarbons, and Hydrocarbon-Oxygenate Mixtures (Triple Expansion Method)

Published By	Publication Date	Number of Pages
ASTM	2007	14

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Description

ASTM D6378-07e1

Historical Standard: Standard Test Method for Determination of Vapor Pressure (VPX) of Petroleum Products, Hydrocarbons, and Hydrocarbon-Oxygenate Mixtures (Triple Expansion Method)

ASTM D6378

Scope

1.1 This test method covers the use of automated vapor pressure instruments to determine the vapor pressure exerted in vacuum by volatile, liquid petroleum products, hydrocarbons, and hydrocarbon-oxygenate mixtures. This test method is suitable for testing samples with boiling points above 0°C (32°F) that exert a vapor pressure between 7 and 150 kPa (1.0 and 21psi) at 37.8°C (100°F) at a vapor-to-liquid ratio of 4:1. The liquid sample volume size required for analysis is dependent upon the vapor-to-liquid ratio chosen (see Note 1) and the measuring chamber volume capacity of the instrument (see 6.1.1 and Note 3).

Note 1

The test method is suitable for the determination of the vapor pressure of volatile, liquid petroleum products at temperatures from 0 to 100°C at vapor to liquid ratios of 4:1 to 1:1 (X = 4 to 1) and pressures up to 500 kPa (70 psi), but the precision statement (see Section 16) may not be applicable.

1.2 The vapor pressure (VPX) determined by this test method at a vapor-liquid ratio of 4:1 (X = 4) of gasoline and gasoline-oxygenate blends at 37.8°C can be correlated to the dry vapor pressure equivalent (DVPE) value determined by Test Method D 5191 (see 16.2).

1.3 &si-value;

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. For specific warning statements, see 7.2-7.8.

Keywords

dry vapor pressure; gasoline; hydrocarbon-oxygenate blends; mini method; petroleum products; vapor pressure; variable volume method

ICS Code

ICS Number Code 75.080 (Petroleum products in general)

DOI: 10.1520/D6378-07E01

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents Terminology
2	Summary of Test Method Significance and Use Apparatus
3	Reagents and Materials Sampling and Sample Introduction TABLE 1
4	FIG. 1
5	FIG. 2
6	Preparation of Apparatus Calibration Verification of Instrument Performance Quality Control Checks Procedure
7	Calculation Report TABLE 2
8	Keywords TABLE 3
9	TABLE 4 TABLE 5
10	X1. DERIVATION OF EQUATIONS USED TO CALCULATE VPX X1.1 Theory TABLE 6
11	X2. AIR CORRECTION AT A TEMPERATURE OTHER THAN THE TEST TEMPERATURE X2.1 X3. INFORMATION RELATING TO THE 2003 INTERLABORATORY STUDY (ILS) X3.1 ILS Objectives Pertaining to Test Method D 6378 X3.2 Samples X3.3 Reference Fuels X3.4 Test Method D 6378 Instrument Types and Data Sets Evaluated
12	X4. GUIDELINES AND SUGGESTIONS FOR PREPARING, STORING, AND ISOLATING QC SAMPLES FOR USE IN THIS TEST X4.1 X4.2 X5. INFORMATION ON CROSS-METHOD REPRODUCIBILITY VALUES BETWEEN PREDICTED DVPE1-L container VALUES DETERMINED BY X5.1 Cross-method Reproducibility (RXY)
13	FIG. X5.1
14	FIG. X5.2

Additional information

Standard Title	D6378-07e1 Standard Test Method for Determination of Vapor Pressure (VP<inf>X</inf>) of Petroleum Products, Hydrocarbons, and Hydrocarbon-Oxygenate Mixtures (Triple Expansion Method)
Published Code	ASTM
Publication Date	2007
Pages Count	14