2,4,4-Trimethyl-1-pentene

Synonym(s):α-Diisobutylene;2,4,4-Trimethyl-1-pentene + 2,4,4-Trimethyl-2-pentene;2,4,4-Trimethylpentene;Diisobutylene

CAS NO.：107-39-1
Empirical Formula: C8H16
Molecular Weight: 112.21
MDL number: MFCD00008855
EINECS: 203-486-4
SAFETY DATA SHEET (SDS)
Update Date: 2026-09-12 18:55:42

What is 2,4,4-Trimethyl-1-pentene?

Chemical properties

colourless liquid

The Uses of 2,4,4-Trimethyl-1-pentene

2,4,4-Trimethyl-1-pentene is used in the manufacturing of chemicals, adhesives, sealant chemicals, fuels and fuel additives.

The Uses of 2,4,4-Trimethyl-1-pentene

Organic synthesis; motor-fuel synthesis, particularly isooctane; peroxide reactions.

Definition

Mixture of isomers.

General Description

2,4,4-Trimethyl-1-pentene is a α-alkene. It is the main dimeric product of isobutene. Ozonolysis of 2,4,4-trimethyl-1-pentene has been investigated in a flow reactor under pseudo-first-order conditions. Hydrocracking (HCG) of 2,4,4-trimethyl-1-pentene has been employed as a model test reaction to investigate the catalytic functionalities of sulfided CoMo catalysts. Liquid phase oxidation of 2,4,4-trimethyl-1-pentene with molecular xygen afforded epoxides and hydrogen peroxides.

Hazard

Flammable, dangerous fire risk.

Health Hazard

Recommended Personal Protective Equipment: Protective goggles; Symptoms Following Exposure: Low general toxicity; may act as simple asphyxiate in high vapor concentrations; General Treatment for Exposure: INHALATION: remove from exposure; support respiration; Toxicity by Inhalation (Threshold Limit Value): Data not available; Short-Term Exposure Limits: Data not available; Toxicity by Ingestion: Data not available; Late Toxicity: Liver and kidney damage in exp. animals; Vapor (Gas) Irritant Characteristics: Vapors are nonirritating to the eyes and throat; Liquid or Solid Irritant Characteristics: Minimum hazard. If spilled on clothing and allowed to remain, may cause smarting and reddening of the skin; Odor Threshold: Data not available.

Chemical Reactivity

Reactivity with Water No reaction; Reactivity with Common Materials: No reaction; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Not pertinent; Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.

Properties of 2,4,4-Trimethyl-1-pentene

Melting point:	-101 °C
Boiling point:	101-102 °C (lit.)
Density	0.708 g/mL at 25 °C (lit.)
vapor density	>3.8 (vs air)
vapor pressure	83 mmHg ( 37.7 °C)
refractive index	n20/D 1.411
Flash point:	21 °F
storage temp.	2-8°C
form	Liquid
color	Clear colorless
Specific Gravity	0.708
Odor	Like gasoline.
explosive limit	4.8%
Water Solubility	Miscible with acetone. Partially soluble in methanol, diethyl ether, benzene, chloroform. Immiscible with water.
BRN	1098309
Stability:	Stable. Highly flammable. Vapour may flow over surfaces to a distant source of ignition. Incompatible with oxidizing agents.
CAS DataBase Reference	107-39-1(CAS DataBase Reference)
NIST Chemistry Reference	1-Pentene, 2,4,4-trimethyl-(107-39-1)
EPA Substance Registry System	1-Pentene, 2,4,4-trimethyl- (107-39-1)

Safety information for 2,4,4-Trimethyl-1-pentene

Signal word	Danger
Pictogram(s)	Flame Flammables GHS02 Environment GHS09
GHS Hazard Statements	H225:Flammable liquids H411:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes	P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P233:Keep container tightly closed. P240:Ground/bond container and receiving equipment. P241:Use explosion-proof electrical/ventilating/lighting/…/equipment. P242:Use only non-sparking tools. P273:Avoid release to the environment.