Chapter 5B

5B. Properties of Hydrocarbon liquids Back to Main

In making equilibrium calculation it often is necessary to convert or combine quantities to meet the need of that calculation. Table 5.1 summarizes useful conversion factors for the paraffins from methane to normal decane. In this table standard conditions are:

Metric: 15° C and 100kPa English: 60° F and 14.7 psia

In the preparation of the quantities shown at these standard conditions, the following conversion factors are used:

379.3 scf/lb mol, 23.96 m³/kmol

Density of water = 8.33 lbm/U.S. gal = 1000 kg/m³

Small deviations in some numbers result from round-off procedures.

##### Definitions of Terms

Component is a substance composed of two or more elements united chemically in definite proportions.

Molecular weight is the mass of the collection of atoms represented by the chemical formula for a molecule.

Normal BP is the boiling temperature of a component at atmospheric pressure.

Relative density of liquid is defined as the density of a liquid divided by the density of pure water at 15° C [60° F]. The density of water is 1.00095 g/cm³ at these conditions.

##### English or SI units

To select either SI metric unit or English units click the button "Field/SI Unit"

The SI system has seven base units from which all other units are derived.

Physical Quantity Name of Unit Abbreviation

Mass (in Kilogram) | kg
Length (in Meter) | m
Time (in Second) | s
Electric current (in Ampere) | A
Temperature Luminous intensity | K
Amount of substance (in Mole) | mol

Prefixes Used in the SI System

Prefix Abbreviation Meaning

Mega- M 106

Kilo- k 103

Deci- d 10-1

Centi- c 10-2

Milli m 10-3

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