2-Ethyl-5-methylpyrazine Chemical Properties

Boiling point:

170.8±35.0 °C(Predicted)

Density 

0.977±0.06 g/cm3(Predicted)

FEMA 

3154 | 2-ETHYL-5-METHYLPYRAZINE

storage temp. 

Sealed in dry,Room Temperature

pka

1.94±0.10(Predicted)

Odor

at 0.10 % in propylene glycol. coffee bean nutty grassy roasted

Odor Type

coffee

JECFA Number

770

LogP

1.17

NIST Chemistry Reference

Pyrazine, 2-ethyl-5-methyl-(13360-64-0)

EPA Substance Registry System

Pyrazine, 2-ethyl-5-methyl- (13360-64-0)

MSDS

• Language:English Provider:2-Ethyl-5-methylpyrazine

2-Ethyl-5-methylpyrazine Usage And Synthesis

Chemical Properties

2-Ethyl-5-methylpyrazine has an odor threshold of 100 ppb in water. It has a nutty, roasted, grassy odor.

Occurrence

Reported found as a constituent in coffee aroma, in roasted barley, dairy products, peanuts, pecans, filberts, popcorn, potato and soy products, smoked fish, wheat and rye bread, asparagus, bell pepper, roasted coconut, cooked beef, beer, whiskey, cocoa, coffee, tea and cooked shrimp.

Preparation

By alkylation of dimethyl-2,5-pyrazine.

Definition

ChEBI: 2-ethyl-5-methylpyrazine is a member of the class of pyrazines that is pyrazine with an ethyl group at position 2 and a methyl group at position 5 or vice versa. Found in tea, soybean paste, chocolate and sesame seed oil. It has a role as a flavouring agent and a Maillard reaction product. It is a member of pyrazines and a volatile organic compound.

Aroma threshold values

Detection: 16 to 100 ppb

2-Ethyl-5-methylpyrazine(13360-64-0)Related Product Information

• Hexahydro-1,3,5-tris(hydroxyethyl)-s-triazine
• Ethylparaben
• Ethyl acetate
• 2-Methylpyrazine
• Ethyl propionate
• Ethanol
• Pyrazinamide
• (2-Methoxyethyl)benzene
• Trimethyl-pyrazine
• Ethylpyrazine
• Tetramethylpyrazine
• Trinexapac-ethyl
• 2-Ethoxyethanol
• Ethyl formate
• ISOXADIFEN-ETHYL
• 2-Butanone
• Diethyl ether
• 2-ethyl-6-methylpyrazine