| 2,3-Diethyl-5-methylpyrazine Basic information |
| Product Name: | 2,3-Diethyl-5-methylpyrazine |
| Synonyms: | 2,3-diethyl-5-methyl-pyrazin;5-Methyl-2,3-diethylpyrazine;Pyrazine, 2,3-diethyl-5-methyl-;LABOTEST-BB LT00453041;FEMA 3336;FEMA NUMBER 3336;2,3-DIETHYL-5-METHYLPYRAZINE;2,3-DIETHYL-6-METHYLPYRAZINE |
| CAS: | 18138-04-0 |
| MF: | C9H14N2 |
| MW: | 150.22 |
| EINECS: | 242-024-6 |
| Product Categories: | Building Blocks;Chemical Synthesis;Alphabetical Listings;C-D;Flavors and Fragrances;Heterocyclic Building Blocks;PIPERIDINE;Pyrazine;Heterocyclic Compounds;Mono- & Polyalkylpyrazines;Pyrazines;pyrazine Flavor;Building Blocks;Heterocyclic Building Blocks |
| Mol File: | 18138-04-0.mol |
| 2,3-Diethyl-5-methylpyrazine Chemical Properties |
| Boiling point | 95 °C (20 mmHg) |
| density | 0.949 g/mL at 25 °C (lit.) |
| refractive index | n |
| FEMA | 3336 | 2,3-DIETHYL-5-METHYLPYRAZINE |
| Fp | 176 °F |
| storage temp. | 2-8°C |
| solubility | Chloroform, Methanol |
| pka | 2?+-.0.10(Predicted) |
| form | neat |
| Specific Gravity | 0.950.949 |
| color | Clear Colourless |
| 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 |
| 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 |
| MSDS Information |
| Provider | Language |
|---|---|
| 2,3-Diethyl-5-methylpyrazine | English |
| SigmaAldrich | English |
| ACROS | English |
| ALFA | English |
| 2,3-Diethyl-5-methylpyrazine Usage And Synthesis |
| 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. |
| 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 | Pyrazine |
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