ChemicalBook > CAS DataBase List > 2,3-Diethyl-5-methylpyrazine

2,3-Diethyl-5-methylpyrazine

Product Name
2,3-Diethyl-5-methylpyrazine
CAS No.
18138-04-0
Chemical Name
2,3-Diethyl-5-methylpyrazine
Synonyms
FEMA 3336;FEMA NUMBER 3336;hazelnut pyrazine;2,3-Diethyl-5-Methyl;Diethyl-5-Methylpyraz;LABOTEST-BB LT00453041;2.3.5.6-four Methylpyrazine;2-METHYL-5,6-DIETHYLPYRAZINE;2,3-DIETHYL-6-METHYLPYRAZINE;2,3-DIETHYL-5-METHYLPYRAZINE
CBNumber
CB9375970
Molecular Formula
C9H14N2
Formula Weight
150.22
MOL File
18138-04-0.mol
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2,3-Diethyl-5-methylpyrazine Property

Boiling point:
95 °C (20 mmHg)
Density 
0.949 g/mL at 25 °C (lit.)
refractive index 
n20/D 1.498(lit.)
FEMA 
3336 | 2,3-DIETHYL-5-METHYLPYRAZINE
Flash point:
176 °F
storage temp. 
2-8°C
solubility 
Chloroform, Methanol
pka
2?+-.0.10(Predicted)
color 
Clear Colourless
Specific Gravity
0.950.949
Odor
at 0.10 % in dipropylene glycol. musty nut skin earthy roasted hazelnut toasted potato dusty foliage vegetable
Odor Type
musty
biological source
synthetic
Water Solubility 
SLIGHTLY SOLUBLE
JECFA Number
777
LogP
2.16
CAS DataBase Reference
18138-04-0(CAS DataBase Reference)
NIST Chemistry Reference
Pyrazine, 2,3-diethyl-5-methyl-(18138-04-0)
EPA Substance Registry System
Pyrazine, 2,3-diethyl-5-methyl- (18138-04-0)
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Safety

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
26-36/37/39
RIDADR 
NA 1993 / PGIII
WGK Germany 
3
TSCA 
Yes
HazardClass 
3
PackingGroup 
III
HS Code 
29339900
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
W333603
Product name
2,3-Diethyl-5-methylpyrazine
Purity
99%, FG
Packaging
100g
Price
$175
Updated
2024/03/01
Sigma-Aldrich
Product number
W333603
Product name
2,3-Diethyl-5-methylpyrazine
Purity
99%, FG
Packaging
1kg
Price
$1260
Updated
2024/03/01
Sigma-Aldrich
Product number
293814
Product name
2,3-Diethyl-5-methylpyrazine
Purity
99%
Packaging
5g
Price
$19.98
Updated
2024/03/01
TCI Chemical
Product number
D1714
Product name
2,3-Diethyl-5-methylpyrazine
Purity
>97.0%(GC)
Packaging
5mL
Price
$68
Updated
2024/03/01
TCI Chemical
Product number
D1714
Product name
2,3-Diethyl-5-methylpyrazine
Purity
>97.0%(GC)
Packaging
25mL
Price
$181
Updated
2024/03/01
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2,3-Diethyl-5-methylpyrazine Chemical Properties,Usage,Production

Chemical Properties

CLEAR LIGHT YELLOW LIQUID

Chemical Properties

2,3-Diethyl-5-methylpyrazine has a nutty, roasted, vegetable aroma.

Occurrence

Reported to be present in coffee, filberts, potato products, Parmesan cheese, chicken, beef, pork, cocoa, peanuts, popcorn, sesame seed and corn tortillas.

Uses

2,3-Diethyl-5-methylpyrazine is a volatile compound found in food such as almonds and swiss cheese.

Definition

ChEBI: 2,3-Diethyl-5-methylpyrazine is a member of pyrazines.

Preparation

By condensation of 3,4-hexanedione with propylene diamine.

Aroma threshold values

Detection: 0.09 to 1 ppb

Taste threshold values

Taste characteristics at 2.5 ppm: musty, toasted; nutty, potato, cocoa, earthy and dirty.

General Description

2,3-Diethyl-5-methylpyrazine has been identified as a potent odorant in coffee sample and has been evaluated by gas chromatography-olfactometry of decreasing headspace samples.

2,3-Diethyl-5-methylpyrazine Preparation Products And Raw materials

Raw materials

1,2-Diaminopropane 3,4-Hexanedione

Preparation Products

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2,3-Diethyl-5-methylpyrazine Suppliers

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View Lastest Price from 2,3-Diethyl-5-methylpyrazine manufacturers

Hebei Zhuanglai Chemical Trading Co Ltd
Product
2,3-Diethyl-5-methylpyrazine 18138-04-0
Price
US $10.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
20 ton
Release date
2024-12-06
Hebei Chuanghai Biotechnology Co., Ltd
Product
2,3-Diethyl-5-methylpyrazine 18138-04-0
Price
US $10.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
100 mt
Release date
2024-11-06
Hebei Chuanghai Biotechnology Co,.LTD
Product
2 3-Diethyl-5-Methylpyrazine 18138-04-0
Price
US $5.00-2.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
10000kg
Release date
2024-08-20

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