Isoctene

Isooctene (diisobutylene, diisobutene) is a mixture of isomers from the group of unsaturated, aliphatic hydrocarbons (more precisely the alkenes ). It is isomeric to 1-octene and is a mixture of the two isomeric forms 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene .

Extraction and presentation

Isooctene can be obtained from isobutylene .

properties

Isooctenes

Surname

Isooctene (mixture of isomers)

2,4,4-trimethylpentene

2,4,4-trimethyl-1-pentene

2,4,4-trimethyl-2-pentene

other names

Diisobutylene
Diisobutene

2,4,4-trimethylpent-1-ene
Alpha diisobutylene

2,4,4-trimethylpent-2-ene
Beta diisobutylene

Structural formula

CAS number

11071-47-9

25167-70-8

107-39-1

107-40-4

PubChem

7869

C ₈ H ₁₆

112.22 g mol ⁻¹

liquid

Brief description

volatile, highly flammable, colorless liquid with a gasoline-like odor

Melting point

−50 ° C

−106 ° C

−93 ° C

−106 ° C

boiling point

118-125 ° C

98-105 ° C

101 ° C

105 ° C

density

0.73 g / cm ³

0.72 g / cm ³

Vapor pressure

50 mbar (38 ° C)

103 mbar (38 ° C)

110 mbar (38 ° C)

111 mbar (38 ° C)

solubility

1.8–2.6 mg / l (20 ° C)

26 mg / l (22 ° C)

practically insoluble

-

GHS
labeling

danger

H and P phrases

225-304-315-411

225-304-411

225-411

225-304-315-319-335-411

no EUH phrases

?

210-261-273-301 + 310
305 + 351 + 338-331

210-273

210-261-273-301 + 310
305 + 351 + 338-331

use

Isooctene is used as a gas chromatographic standard, for the production of 2,4,4-trimethyl-1-pentanol and 3,3-dimethylbutene and as a starting material for the oxo synthesis of nonanols . These in turn are used as base materials for the production of plasticizers or surfactants .

Derivatives

Diisobutylene oxide C ₈ H ₁₆ O, CAS number: 63919-00-6

safety instructions

Isooctene vapors form an explosive mixture with air ( flash point 7 ° C)

Individual evidence

↑ Patentscope: Diisobutylene process
↑ ^a ^b ^c ^d ^e ^f Entry on isooctene in the GESTIS substance database of the IFA , accessed on October 14, 2012(JavaScript required) .
↑ ^a ^b ^c ^d ^e ^f Entry on 2,4,4-trimethylpentene, mixture of isomers in the GESTIS substance database of the IFA , accessed on October 14, 2012(JavaScript required) .
↑ ^a ^b ^c ^d ^e ^f Entry on 2,4,4-trimethyl-1-pentene in the GESTIS substance database of the IFA , accessed on October 14, 2012(JavaScript required) .
↑ ^a ^b ^c ^d ^e ^f Entry on 2,4,4-trimethyl-2-pentene in the GESTIS substance database of the IFA , accessed on October 14, 2012(JavaScript required) .
^ Christoph Janiak, Hans-Jürgen Meyer, Dietrich Gudat, Ralf Alsfasser: Riedel Modern Inorganic Chemistry . 4th edition. Walter de Guyter., Berlin / Boston, ISBN 978-3-11-024900-2 , pp. 822 .

[1] Patentscope: Diisobutylene process

[GESTIS-1-2] ↑ ^a ^b ^c ^d ^e ^f Entry on isooctene in the GESTIS substance database of the IFA , accessed on October 14, 2012(JavaScript required) .

[GESTIS-3] ↑ ^a ^b ^c ^d ^e ^f Entry on 2,4,4-trimethylpentene, mixture of isomers in the GESTIS substance database of the IFA , accessed on October 14, 2012(JavaScript required) .

[GESTIS-2-4] ↑ ^a ^b ^c ^d ^e ^f Entry on 2,4,4-trimethyl-1-pentene in the GESTIS substance database of the IFA , accessed on October 14, 2012(JavaScript required) .

[GESTIS-3-5] ↑ ^a ^b ^c ^d ^e ^f Entry on 2,4,4-trimethyl-2-pentene in the GESTIS substance database of the IFA , accessed on October 14, 2012(JavaScript required) .

[Janiak-6] Christoph Janiak, Hans-Jürgen Meyer, Dietrich Gudat, Ralf Alsfasser: Riedel Modern Inorganic Chemistry . 4th edition. Walter de Guyter., Berlin / Boston, ISBN 978-3-11-024900-2 , pp. 822 .