ASTM D2598-12

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

ASTM International, 11/01/2012

Publisher: ASTM

File Format: PDF

$26.00$52.00

Description

Published:01/11/2012

Pages:3

File Size:1 file , 72 KB

Note:This product is unavailable in Russia, Ukraine, Belarus

1.1 This 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).

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

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

1.1.3 For 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

^A Some 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.

More ASTM standard pdf

ASTM F3180/F3180M-21

ASTM F3180/F3180M-21

Standard Specification for Low-Speed Flight Characteristics of Aircraft

$39.00 $78.00

ASTM D4216-17

Standard Specification for Rigid Poly(Vinyl Chloride) (PVC) and Related PVC and Chlorinated Poly(Vinyl Chloride) (CPVC) Building Products Compounds

$32.00 $64.00

ASTM D1412/D1412M-17

ASTM D1412/D1412M-17

Standard Test Method for Equilibrium Moisture of Coal at 96 to 97 Percent Relative Humidity and 30 oC

$29.00 $58.00

ASTM D1403-20a

Standard Test Methods for Cone Penetration of Lubricating Grease Using One-Quarter and One-Half Scale Cone Equipment

$30.00 $60.00