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ASTM D 2598 : 2012

ASTM D 2598 : 2012

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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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Superseded date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

Superseded by

ASTM D 2598 : 2016

Language(s)

English

Published date

01-11-2012

Publisher

American Society for Testing and Materials

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Hardcopy - English
PDF - English
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10

Committee
D 02
DocumentType
Standard Practice
Pages
3
PublisherName
American Society for Testing and Materials
Status
Superseded
SupersededBy
Supersedes

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-GasesA

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.

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

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