Chemical Name
CAS-Number

Colour/Form

Boiling Point (°C)

Melting Point (°C)

Molecular Weight

Solubility in Water

Relative Density (water=1)

Relative Vapour Density (air=1)

Vapour Pressure/ (Kpa)

Inflam.
Limits

Flash Point (ºC)

Auto Ignition Point (º C)

cis-2-BUTENE
590-18-1

colourless gas

3.73

-139.3

56.10

insol

0.6213

1.94

@ 21 °C

1.7 ll
9.0 ul

324

trans-2-BUTENE
624-64-6

liquefied gas

0.8

-105

56.10

0.60

1.94

@ 21 °C

1.8 ll
9.7 ul

324

BICYCLOHEPTADIENE
121-46-0

89.5

-19.1

92.13

insol

0.9064

1,3-BUTADIENE
106-99-0

colourless gas

-4.5

-108.9

54.09

insol

0.6211

1.87

245

2.0 ll
11.5 ul

76

414

CYCLOHEXENE
110-83-8

colourless liquid

82.98

-103.5

82.14

insol

0.8102

2.8

8.9

1.2 ll
4.8 ul

-6 cc

310

CYCLOPENTADIENE
542-92-7

colourless liquid

41

-85

66.11

insol

0.8021

2.3

@ 25 °C

25 oc

640

ETHYLENE
74-85-1

colourless gas

-104

-169

28.05

insol

@ 25 ºC

0.978

@ 15 °C

2.7 ll
36.0 ul

450

ETHYLIDENE NORBORNENE
16219-75-3

colourless liquid; white liquid

67

-80

120.21

insol

0.8958

4.1

0.61

38 oc

1-HEXENE
592-41-6

colourless liquid

63.35

-139.8

84.16

insol

0.6731

3.0

@ 38 °C

1.2 ll
6.9 ul

-26

ISOPRENE
78-79-5

colourless liquid

34.067

-146

68.13

insol

0.681

2.4

61.8

1.5 ll
8.9 ul

54 cc

427

1-OCTENE
111-66-0

colourless liquid

121.3

-101.7

112.22

insol

0.7149

3.87

@ 38 °C

0.7 ll
3.9 ul

21

230

2,4,4-TRIMETHYL-1-­PENTENE
107-39-1

colourless liquid

101.4

-93.5

112.22

insol

0.7150

3.8

@ 38 °C

0.8 ll
4.8 ul

-5

391

2,4,4-TRIMETHYL-2-­PENTENE
107-40-4

colourless liquid

104.91

-106.3

112.22

insol

0.7218

3.8

@ 38 °C

0.9 ll
? ul

17 oc

305