2-Methyl-3-(methylthio)pyrazine Chemical Properties

Boiling point:

213-214 °C (lit.)

Density 

1.15 g/mL at 25 °C (lit.)

refractive index 

n20/D 1.585(lit.)

FEMA 

3208 | (METHYLTHIO)METHYLPYRAZINE (MIXTURE OF ISOMERS)

Flash point:

210 °F

storage temp. 

Sealed in dry,Room Temperature

form 

clear liquid

pka

0.88±0.10(Predicted)

color 

Colorless to Almost colorless

Odor

at 0.10 % in propylene glycol. roasted meat nutty almond vegetable

Odor Type

nutty

JECFA Number

797

LogP

1.72

CAS DataBase Reference

2882-20-4(CAS DataBase Reference)

NIST Chemistry Reference

Pyrazine, 2-methyl-3-(methylthio)-(2882-20-4)

EPA Substance Registry System

Pyrazine, 2-methyl-3-(methylthio)- (2882-20-4)

Safety Information

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

26-36

RIDADR 

UN 3334

WGK Germany 

3

TSCA 

Yes

HS Code 

29339900

MSDS

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• Language:English Provider:SigmaAldrich
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2-Methyl-3-(methylthio)pyrazine Usage And Synthesis

Chemical Properties

clear colorless liquid

Chemical Properties

2-Methyl-3(or 5 or 6)-methylthiopyrazine has a roasted almond, hazelnut and vegetable aroma.

Preparation

From 2-methylchloropyrazine; a mixture of 2-methyl-3-methylthiopyrazine, 2-methyl-5-methylthiopyrazine, and 2-methyl-6-methylthiopyrazine is obtained.

Definition

ChEBI: 2-Methyl-(3 or 5 or 6)-(methylthio)pyrazine (mixture of isomers) is an aryl sulfide.

Aroma threshold values

Detection: 4 to 60 ppb. Aroma characteristics at 1.0%: toasted popcorn, roasted almond, hazelnut, peanut and cashewnutty, with a caramellic and corn-chip nuance.

Taste threshold values

Taste characteristics at 3 to 10 ppm: nutty, roasted and earthy with coffee and corn nuances, peanut and pecan nutty, popcorn and corn chip–like with a burnt musty nuance.

2-Methyl-3-(methylthio)pyrazine(2882-20-4)Related Product Information

• Paraquat dichloride
• Acetonitrile
• Basic Violet 1
• Methyl acetate
• 2-Methylpyrazine
• Methanol
• Pyrazinamide
• Tetramethylpyrazine
• 2-(Methylthio)pyrazine
• Pyrazine
• Methylparaben
• Glipizide
• Methyl acrylate
• Thioridazine
• Kresoxim-methyl
• Methyl
• 2-(METHYLTHIO)-3-ETHYLPYRAZINE
• 2-FURFURYLTHIO-3-METHYLPYRAZINE