ASTM D 2598 : 2012

Name: ASTM D 2598 : 2012
Brand: ASTM
Price: 55.10 GBP

Superseded

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Standard Practice for Calculation of Certain Physical Properties of Liquefied Petroleum (LP) Gases from Compositional Analysis

Available format(s)

Hardcopy , PDF

Superseded date

11-11-2014

Language(s)

English

Published date

01-11-2012

Publisher

American Society for Testing and Materials

1.1This practice covers, by compositional analysis, the approximate determination of the following physical characteristics of commercial propane, special-duty propane, commercial propane/butane mixtures, and commercial butane (covered by Specification D1835): vapor pressure, relative density, and motor octane number (MON).

1.1.1This practice is not applicable to any product exceeding specifications for nonvolatile residues. (See Test Method D2158.)

1.1.2For calculating motor octane number, this practice is applicable only to mixtures containing 20 % or less of propene.

1.1.3For calculated motor octane number, this practice is based on mixtures containing only components shown in Table 1.

TABLE 1 Factors for Determining the Physical Characteristics of LP-Gases^A

Component	Vapor Pressure Blend Factor, kPa-gage (PSIG) at 37.8°C (100°F)	Relative Density at 15.6°C (60°F)	MON Blend Value
Methane	17547 (2545)	0.3	. . .
Ethane	4213 (611)	0.3563	100.7
Ethene (Ethylene)	8720 (1265)	0.37	75.6
Propane	1200 (174)	0.5072	97.1
Propene (Propylene)	1466 (213)	0.5226	84.9
Methylpropane (Isobutane)	400 (58)	0.5629	97.6
n-Butane	255 (37)	0.5842	89.6
t-2-Butene	242 (35)	0.6099	…
1-Butene	328 (48)	0.6004	80.8
2-Methylpropene (Isobutylene)	340 (49)	0.6004	…
c-2-Butene	216 (31)	0.6275	83.5
2,2-Dimethylpropane (Neopentane)	152 (22)	0.5961	80.2
Cyclopentane	-33 (-4.7)	0.7503	84.9
2-Methylbutane (Isopentane)	40 (5.8)	0.6251	90.3
n-Pentane	6.4 (0.9)	0.6307	62.6
n-Hexane	-67 (-9.7)	0.6641	26.0

^ASome constants for vapor pressure and motor octanes are empirical values to be used only in the calculation procedures described in this practice. References are located in Appendix X1.

1.2The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.

1.2.1Exception—Motor octane number and relative density are given in MON numbers and dimensionless units, respectively.

Committee	D 02
DocumentType	Standard Practice
Pages	3
PublisherName	American Society for Testing and Materials
Status	Superseded
SupersededBy	ASTM D 2598 : 2016
Supersedes	ASTM D 2598 : 2002 ASTM D 2598 : 2002 : R2007

ASTM D 2163 : 2014 : R2019	Standard Test Method for Determination of Hydrocarbons in Liquefied Petroleum (LP) Gases and Propane/Propene Mixtures by Gas Chromatography
ASTM D 1835 : 2018 : REV A	Standard Specification for Liquefied Petroleum (LP) Gases
ASTM D 7756 : 2019	Standard Test Method for Residues in Liquefied Petroleum (LP) Gases by Gas Chromatography with Liquid, On-Column Injection
ASTM F 2201 : 2019	Standard Consumer Safety Specification for Utility Lighters
ASTM F 400 : 2019	Standard Consumer Safety Specification for Lighters