2-METHYL-2-PENTENAL Chemical Properties

Melting point:

-90°C

Boiling point:

137-138 °C765 mm Hg(lit.)

Density 

0.86 g/mL at 25 °C(lit.)

refractive index 

n20/D 1.45(lit.)

Flash point:

89 °F

Water Solubility 

Slightly soluble in water

form 

clear liquid

color 

White to Yellow to Green

Odor

Powerful and diffusive, “gassy’’-green and slightly fruity odor of poor tenacity.

JECFA Number

1209

LogP

1.700 (est)

CAS DataBase Reference

14250-96-5(CAS DataBase Reference)

EPA Substance Registry System

2-Pentenal, 2-methyl-, (2E)- (14250-96-5)

Safety Information

Hazard Codes 

Xn

Risk Statements 

10-20-36

Safety Statements 

26

RIDADR 

UN 1989 3/PG 3

WGK Germany 

1

RTECS 

SB2100000

HS Code 

2912.19.5000

HazardClass 

3

PackingGroup 

III

MSDS

• Language:English Provider:SigmaAldrich
• Language:English Provider:ACROS
• Language:English Provider:ALFA

2-METHYL-2-PENTENAL Usage And Synthesis

Uses

2-METHYL-2-PENTENAL has been suggested for use in perfume compositions as part of novel green topnote complexes. It has also been used to a minor extent in the reconstruction of certain essential oils.

Production Methods

2-METHYL-2-PENTENAL can be produced from Propionaldehyde by selfcondensation (Aldol-condensation).

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