Name | 2,3,5-trimethylpyrazine |
Synonyms | AI3-34442 CCRIS 2932 BRN 0002423 FEMA No. 3244 UNII-Q8PR0W8TIT Trimethylpyrazine Pyrazine, trimethyl- 2.3.5-Methyl pyrazine 2,3,5-Trimethyl prazine 2,3,5-trimethylpyrazine 2,3,6-Trimethylpyrazine 2,3,5-Trimethyl pyrazine Pyrazine, 2,3,5-trimethyl- Natural 2,3,5-Trimethylpyrazine 2,3,5-Trimethyl pyrazine (natural) 5-23-05-00419 (Beilstein Handbook Reference) 2,3,5-Trimethylpyrazine Trimethyl-pyrazine |
CAS | 14667-55-1 |
EINECS | 238-712-0 |
InChI | InChI=1/C7H10N2/c1-5-4-8-6(2)7(3)9-5/h4H,1-3H3 |
InChIKey | IAEGWXHKWJGQAZ-UHFFFAOYSA-N |
Molecular Formula | C7H10N2 |
Molar Mass | 122.17 |
Density | 0.979 g/mL at 25 °C (lit.) |
Melting Point | 156 °C |
Boling Point | 171-172 °C (lit.) |
Flash Point | 130°F |
JECFA Number | 774 |
Vapor Presure | 1.72mmHg at 25°C |
Appearance | neat |
Specific Gravity | 0.979 |
Color | Colorless to Light yellow to Light orange |
Odor | roasted odor, reminiscent of coffee and cocoa |
BRN | 2423 |
pKa | 2.69±0.10(Predicted) |
Storage Condition | Inert atmosphere,Room Temperature |
Refractive Index | n20/D 1.5040(lit.) |
Physical and Chemical Properties | density 0.97 boiling point 171-172°C refractive index 1.503-1.507 flash point 54°C |
Use | For cocoa, coffee, fried peanuts and other baked food flavor |
Hazard Symbols | Xn - Harmful![]() |
Risk Codes | R10 - Flammable R22 - Harmful if swallowed R36/37/38 - Irritating to eyes, respiratory system and skin. |
Safety Description | S16 - Keep away from sources of ignition. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. |
UN IDs | UN 1993 3/PG 3 |
WGK Germany | 3 |
RTECS | UQ3907000 |
TSCA | Yes |
HS Code | 29339900 |
Hazard Class | 3 |
Packing Group | III |
FEMA | 3244 | 2,3,5-TRIMETHYLPYRAZINE |
NIST chemical information | information provided by: webbook.nist.gov (external link) |
EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
trait | colorless to light yellow transparent liquid |
Use | 235 trimethylpyrazine as baked goods, cheese, meat, tobacco. GB 2760-1996 provides for temporary use of flavorants. Mainly used in the preparation of cocoa, chocolate and fried nuts and other types of flavor. GB 2760-1996 provides for temporary use of flavorants. Mainly used in the preparation of cocoa, chocolate and fried nuts and other types of flavor. For cocoa, coffee, fried peanuts and other baked food flavor |
content analysis | gas chromatography analysis was performed on a polar column in GT-10-4. |
toxicity | GRAS(FEMA). LD50 806mg/kg (rat, oral). |
usage limit | FEMA(mg/kg): Soft drink 5.0~10; Candy 5.0~10; baked Food 5.0~10; Cereal 2.0; Condiment 2.0; Meat and meat sauce 2.0; Dairy products 1.0; Soup 2.0. |