2-ISOBUTYL-3-METHYLPYRAZINE
- CAS NO.：13925-06-9
- Empirical Formula: C9H14N2
- Molecular Weight: 150.22
- MDL number: MFCD00059770
- EINECS: 237-693-6
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-11-19 20:33:22
What is 2-ISOBUTYL-3-METHYLPYRAZINE?
Description
Synthesis: By condensation of ethylenediamine with 5-methyl- 2,3-hexanedione.
Chemical properties
Liquid
Chemical properties
2-Isobutyl-3-methylpyrazine has extremely powerful herbaceous green earthy notes. Diluted water solutions exhibit a characteristic odor of green bell peppers
Occurrence
Reported present in coffee, potato products, cooked beef, fried cured pork and roasted peanuts.
Preparation
By condensation of ethylenediamine with 5-methyl-2,3-hexandione
Definition
ChEBI: 2-Methyl-3-(2-methylpropyl)pyrazine is a member of pyrazines.
Aroma threshold values
Detection: 13 to 35 ppb
Taste threshold values
Taste characteristics at 35 ppm: herbaceous, green, earthy notes.
Properties of 2-ISOBUTYL-3-METHYLPYRAZINE
| Melting point: | 74 °C |
| Boiling point: | 199 °C(lit.) |
| Density | 0.942 g/mL at 25 °C(lit.) |
| refractive index | n |
| FEMA | 3133 | 2-ISOBUTYL-3-METHYLPYRAZINE |
| Flash point: | 180 °F |
| storage temp. | Sealed in dry,Room Temperature |
| form | clear liquid |
| pka | 1.88±0.10(Predicted) |
| color | Colorless to Orange to Green |
| Odor | at 0.10 % in dipropylene glycol. herbal green sugar syrup |
| JECFA Number | 773 |
| CAS DataBase Reference | 13925-06-9(CAS DataBase Reference) |
| EPA Substance Registry System | Pyrazine, 2-methyl-3-(2-methylpropyl)- (13925-06-9) |
Safety information for 2-ISOBUTYL-3-METHYLPYRAZINE
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H227:Flammable liquids H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P280:Wear protective gloves/protective clothing/eye protection/face protection. 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. P370+P378:In case of fire: Use … for extinction. P403+P235:Store in a well-ventilated place. Keep cool. |
Computed Descriptors for 2-ISOBUTYL-3-METHYLPYRAZINE
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