2-Ethyl-3-methylpyrazine
Synonym(s):filbert pyrazine
- CAS NO.：15707-23-0
- Empirical Formula: C7H10N2
- Molecular Weight: 122.17
- MDL number: MFCD00006150
- EINECS: 239-799-8
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-12-18 14:15:30
What is 2-Ethyl-3-methylpyrazine?
Chemical properties
clear colorless to slightly yellow liquid
Chemical properties
2-Ethyl-3-methylpyrazine has a strong, raw-potato, roasted, earthy odor.
Occurrence
Reported found in bakery products, roasted barley, coffee, peanuts, filberts, potato products, soy products, roasted and fried chicken, beef, pork, beer, rum, cocoa, coffee, tea, malt, shrimp and crayfish.
The Uses of 2-Ethyl-3-methylpyrazine
2-Ethyl-3-methylpyrazine is used in preparation of Chinese chestnut pyrolyzate and their application to e-cigarette.
The Uses of 2-Ethyl-3-methylpyrazine
Food additive.
Preparation
By condensation of ethylenediamine with 2,3-pentanedione.
Definition
ChEBI: 2-Ethyl-3-methylpyrazine, 9CI is a member of pyrazines.
Aroma threshold values
Detection: 2 ppm (130 ppb in water)
Taste threshold values
Taste characteristics at 10 ppm: nutty, peanut, musty corn-like with raw and oily nuances.
Hazard
Moderately toxic by ingestion.
Flammability and Explosibility
Not classified
Safety Profile
Moderately toxic by ingestion. When heated to decomposition it emits acrid smoke and irritating fumes.
Properties of 2-Ethyl-3-methylpyrazine
| Boiling point: | 57 °C10 mm Hg(lit.) |
| Density | 0.987 g/mL at 25 °C |
| vapor pressure | 1.74hPa at 20℃ |
| FEMA | 3155 | 2-ETHYL-3-METHYLPYRAZINE |
| refractive index | n |
| Flash point: | 138 °F |
| storage temp. | Sealed in dry,Room Temperature |
| solubility | sparingly soluble |
| form | neat |
| pka | 1.94±0.10(Predicted) |
| color | Colorless to Light yellow |
| Specific Gravity | 0.987 |
| Odor | at 0.10 % in dipropylene glycol. nutty peanut musty corn raw earthy bread |
| Water Solubility | sparingly soluble |
| JECFA Number | 768 |
| BRN | 956775 |
| CAS DataBase Reference | 15707-23-0(CAS DataBase Reference) |
| NIST Chemistry Reference | Pyrazine, 2-ethyl-3-methyl-(15707-23-0) |
| EPA Substance Registry System | Pyrazine, 2-ethyl-3-methyl- (15707-23-0) |
Safety information for 2-Ethyl-3-methylpyrazine
| Signal word | Warning |
| Pictogram(s) |
 Flame Flammables GHS02  Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H226:Flammable liquids H302:Acute toxicity,oral H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. 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. |
Computed Descriptors for 2-Ethyl-3-methylpyrazine
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