2-Ethyl-5-methylpyrazine

CAS NO.：13360-64-0
Empirical Formula: C7H10N2
Molecular Weight: 122.17
EINECS: 236-416-6
SAFETY DATA SHEET (SDS)
Update Date: 2024-08-24 19:19:26

What is 2-Ethyl-5-methylpyrazine?

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

Properties of 2-Ethyl-5-methylpyrazine

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
JECFA Number	770
NIST Chemistry Reference	Pyrazine, 2-ethyl-5-methyl-(13360-64-0)
EPA Substance Registry System	Pyrazine, 2-ethyl-5-methyl- (13360-64-0)

Safety information for 2-Ethyl-5-methylpyrazine

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes	P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P271:Use only outdoors or in a well-ventilated area. P280:Wear protective gloves/protective clothing/eye protection/face protection. P362:Take off contaminated clothing and wash before reuse. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P332+P313:IF SKIN irritation occurs: Get medical advice/attention. P337+P313:IF eye irritation persists: Get medical advice/attention. P405:Store locked up. P403+P233:Store in a well-ventilated place. Keep container tightly closed. P501:Dispose of contents/container to..…