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HomeProduct name list2,3-Diethyl-5-methylpyrazine

2,3-Diethyl-5-methylpyrazine

Synonym(s):hazelnut pyrazine

  • CAS NO.:18138-04-0
  • Empirical Formula: C9H14N2
  • Molecular Weight: 150.22
  • MDL number: MFCD00009635
  • EINECS: 242-024-6
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-11-06 18:33:45
2,3-Diethyl-5-methylpyrazine Structural

What is 2,3-Diethyl-5-methylpyrazine?

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.

The Uses of 2,3-Diethyl-5-methylpyrazine

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

What are the applications of Application

2,3-Diethyl-5-methylpyrazine is a potent odorant in coffee

Preparation

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

Definition

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

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.

Properties of 2,3-Diethyl-5-methylpyrazine

Boiling point: 95 °C (20 mmHg)
Density  0.949 g/mL at 25 °C (lit.)
FEMA  3336 | 2,3-DIETHYL-5-METHYLPYRAZINE
refractive index  n20/D 1.498(lit.)
Flash point: 176 °F
storage temp.  2-8°C
solubility  Chloroform, Methanol
form  neat
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
Water Solubility  SLIGHTLY SOLUBLE
JECFA Number 777
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)

Safety information for 2,3-Diethyl-5-methylpyrazine

Signal word Warning
Pictogram(s)
ghs
Exclamation Mark
Irritant
GHS07
Precautionary Statement Codes P261:Avoid breathing dust/fume/gas/mist/vapours/spray.
P264:Wash hands thoroughly after handling.
P264:Wash skin thouroughly after handling.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
P301+P312:IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

Computed Descriptors for 2,3-Diethyl-5-methylpyrazine

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