TABLE 6-1 Physical and Chemical Properties of C2-C9 n-Alkanes

 

C2

C3

C4

C5

C6

C7

C8

C9

Formula

C2H6

C3H8

C4H10

C5H12

C6H14

C7H16

C8H18

C9H20

Name

Ethane

Propane

Butane

Pentane

Hexane

Heptane

Octane

Nonane

CAS registry no.

78-84-0

74-98-6

106-97-8

109-66-0

110-54-3

142-82-5

111-65-9

111-84-2

Molecular weight

30.1

44.1

58.1

72.1

86.1

100.2

114.2

128.3

Boiling point (°C)

−88.6

−42.1

−0.5

36.1

69

98.4

125.7

150.8

Lower explosive limit

3.2%

2.3%

1.9%

1.4%

1.2%

1.2%

1.0%

0.9%

Upper explosive limit

12.5%

9.5%

8.4%

7.8%

7.8%

6.7%

4.7%

2.9%

Vapor pressure (mm Hg)

Gas

Gas

Gas

400 (18°C)

100 (20°C)

40 (25°C)

10 (19°C)

10 (38°C)

Conversion factor (ppm to mg/m3) 25°C

1.23

1.80

2.38

2.95

3.52

4.10

4.67

5.25

Isomers

1

1

2

3

5

9

18

33

Abbreviations: mg/m3, milligrams per cubic meter; ppm, parts per million.

Source: Sandmeyer 1981, ACGIH 1991.



The National Academies | 500 Fifth St. N.W. | Washington, D.C. 20001
Copyright © National Academy of Sciences. All rights reserved.
Terms of Use and Privacy Statement