TRANS-2-METHYL-2-BUTENAL Chemical Properties

Melting point:

-101.15°C (estimate)

Boiling point:

116-119 °C752 mm Hg(lit.)

Density 

0.871 g/mL at 25 °C(lit.)

refractive index 

n20/D 1.448(lit.)

FEMA 

3407 | 2-METHYL-2-BUTENAL

Flash point:

65 °F

storage temp. 

Flammables area

solubility 

soluble in Chloroform

form 

Liquid

color 

Clear colorless to yellow

Odor

at 0.10?%?in?dipropylene glycol. strong green fruit

Water Solubility 

Soluble in water

Sensitive 

Air Sensitive

JECFA Number

1201

BRN 

1698207

Stability:

Air sensitive, Light Sensitive

LogP

1.065 (est)

CAS DataBase Reference

497-03-0(CAS DataBase Reference)

EPA Substance Registry System

trans-2-Methylcrotonaldehyde (497-03-0)

Safety Information

Hazard Codes 

F,Xi

Risk Statements 

11-36/37/38-10

Safety Statements 

16-26-36

RIDADR 

UN 1989 3/PG 2

WGK Germany 

3

TSCA 

Yes

HazardClass 

3

PackingGroup 

II

HS Code 

29121990

MSDS

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

TRANS-2-METHYL-2-BUTENAL Usage And Synthesis

Description

2-Methyl-2-butenal has a penetrating, powerful green ethereal odor. May be prepared by condensation of acetaldehyde and propionaldehyde.

Chemical Properties

trans-2-Methyl-2-butenal is a clear colorless to yellow liquid. B.P. 135℃. Sp.Gr. 0.87. Almost insoluble in water, soluble in alcohol and oils. Powerful and very diffusive, penetrating “gassy” odor of green-ethereal character. Very poor tenacity.

Uses

Tiglic aldehyde was used in the concise total synthesis of 7-demethylpiericidin A1. It was used as starting reagent during the synthesis of:

• alkyl-branched tetraene hydrocarbons, pheromone component for dried fruit beetle
• E,E-2,4-dimethyl-2,4-hexa dienal, volatile constituents of the defensive secretions of Leiobunum nigripalpi
• 4-methyl-2,4-hexadiene-1-ol

General Description

trans-2-Methyl-2-butenal is one of the major volatile constituents of coriander and olive oil.

TRANS-2-METHYL-2-BUTENAL(497-03-0)Related Product Information

• DUROQUINONE
• Methyl 1-cyclohexene-1-carboxylate
• Tetraphenylcyclopentadienone
• DIPHENYLCYCLOPROPENONE
• trans-2-Methyl-2-pentenoic acid
• 1-Cyclohexene-1-carboxylic acid
• 1-Cyclopentenecarboxylic acid
• (-)-PERILLALDEHYDE
• Mordant Blue 29
• 1-ACETYL-1-CYCLOHEXENE
• VITAMIN K1
• Jasmone
• NAPHTHOCHROME GREEN
• alpha-Methylcinnamic acid
• 2,3-Dichloro-5,6-dicyano-1,4-benzoquinone
• Acrolein
• Crotonaldehyde
• 2-Butene