2,3,5-Trimethylpyrazine
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2,3,5-Trimethylpyrazine

2,3,5-Trimethylpyrazine 's cas code is 14667-55-1.

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Product Description

2,3,5-Trimethylpyrazine Basic information


Product Name:

2,3,5-Trimethylpyrazine

CAS:

14667-55-1

MF:

C7H10N2

MW:

122.17

EINECS:

238-712-0

Mol File:

14667-55-1.mol



2,3,5-Trimethylpyrazine Chemical Properties


Melting point 

156 °C

Boiling point 

171-172 °C(lit.)

density 

0.979 g/mL at 25 °C(lit.)

FEMA 

3244 | 2,3,5-TRIMETHYLPYRAZINE

refractive index 

n20/D 1.5040(lit.)

Fp 

130 °F

storage temp. 

Flammables area

pka

2.69±0.10(Predicted)

form 

neat

Specific Gravity

0.979

Odor

roasted odor, reminiscent of coffee and cocoa

JECFA Number

774

BRN 

2423

InChIKey

IAEGWXHKWJGQAZ-UHFFFAOYSA-N

CAS DataBase Reference

14667-55-1(CAS DataBase Reference)

NIST Chemistry Reference

Pyrazine, trimethyl-(14667-55-1)

EPA Substance Registry System

Trimethylpyrazine (14667-55-1)


2,3,5-Trimethylpyrazine Safety Information


Hazard Codes 

Xn

Risk Statements 

10-22-36/37/38

Safety Statements 

16-26-36/37/39

RIDADR 

UN 1993 3/PG 3

WGK Germany 

3

RTECS 

UQ3907000

TSCA 

Yes

HazardClass 

3

PackingGroup 

III

HS Code 

29339900


2,3,5-Trimethylpyrazine Usage And Synthesis


Chemical Properties

CLEAR YELLOW LIQUID

Chemical Properties

2,3,5-Trimethylpyrazine has a baked potato or roasted nut aroma.

Preparation

From 2,5-dimethylpyrazine by ring alkylation with MeLi; by condensing propylenediamine with 2,3-butanedione.

Aroma threshold values

Detection: 400 ppb to 9 ppm (9 ppm in water)

Taste threshold values

Taste characteristics at 80 ppm: raw, musty, nutty and potato.

Safety Profile

Moderately toxic by ingestion. Combustible liquid. When heated to decomposition emits toxic fumes of NOx.


2,3,5-Trimethylpyrazine Preparation Products And Raw materials


Preparation Products

2-Ethyl-3,5-dimethylpyrazine


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