cis-4-Methyl-2-pentene Chemical Properties

Melting point:

-134.85°C

Boiling point:

57-58 °C(lit.)

Density 

0.686 g/mL at 20 °C(lit.)

vapor pressure 

399 mm Hg ( 37.7 °C)

refractive index 

n20/D 1.392

FEMA 

4650 | 4-METHYL-CIS-2-PENTENE

Flash point:

−28 °F

storage temp. 

0-10°C

form 

clear liquid

color 

Colorless to Almost colorless

Odor

at 1.00 % in propylene glycol. fruity green

Odor Type

fruity

JECFA Number

2194

InChIKey

LGAQJENWWYGFSN-PLNGDYQASA-N

LogP

3.24

CAS DataBase Reference

691-38-3(CAS DataBase Reference)

EPA Substance Registry System

cis-4-Methyl-2-pentene (691-38-3)

Safety Information

Hazard Codes 

F,Xn

Risk Statements 

36/37/38-65-11

Safety Statements 

16-26-36-62

RIDADR 

UN 3295 3/PG 2

WGK Germany 

3

F 

9-23

HS Code 

2901.29.1050

HazardClass 

3.1

PackingGroup 

II

MSDS

• Language:English Provider:SigmaAldrich

cis-4-Methyl-2-pentene Usage And Synthesis

Chemical Properties

clear yellow liquid

Purification Methods

Dry the cis-pentene with CaH2, and distil it. [Beilstein 1 IV 841.]

cis-4-Methyl-2-pentene(691-38-3)Related Product Information

• Ethyl chrysanthemumate
• ALPHA-PINENE
• (-)-VERBENONE
• Retinoic acid
• 2-CYCLOPENTENE-1-ACETIC ACID
• 3-METHYL-1-CYCLOHEXENE
• CHRYSANTHEMYL ALCOHOL
• (-)-MYRTENOL
• Irisone
• Retinal
• (1R)-(+)-ALPHA-PINENE
• Vitamin A
• 1,2,3,4,5-Pentamethylcyclopentadiene
• alpha-Ionone
• trans-3-Methyl-2-pentene-4-yn-1-ol
• TRANS-3-METHYL-2-PENTENE
• TRANS-4-METHYL-2-PENTENE
• CIS-3-METHYL-2-PENTENE