2-Methoxy-3-methylpyrazine (CAS # 2847-30-5)
| Hazard Cov Cim | Xn – Ua phem |
| Risk Codes | R22 - Ua phem yog tias nqos R37/38 - Kab mob ua pa thiab tawv nqaij. R41 - Riam phom loj rau qhov muag R10 - Flammable |
| Kev nyab xeeb piav qhia | S26 - Thaum sib cuag nrog lub qhov muag, yaug tam sim ntawd nrog dej txaus thiab nrhiav kev kho mob. S39 - Hnav qhov muag / ntsej muag tiv thaiv. S16 - Khaws kom deb ntawm qhov chaw hluav taws xob. |
| UN IDs | UN 1993 3/PG 3 |
| WGK Germany | 3 |
| TSCA | Yog lawm |
| HS Code | 29339900 ib |
| Hazard Class | 3 |
| Packing Group | III |
Taw qhia
2-Methoxy-3-methylpyrazine (tseem hu ua methoxylate) yog cov organic compound. Cov hauv qab no yog kev qhia txog nws cov khoom, kev siv, kev tsim khoom thiab cov ntaub ntawv kev nyab xeeb:
Zoo:
- Cov tsos mob: Melaphenone yog xim tsis muaj xim rau lub teeb daj daj lossis crystalline hmoov.
- Solubility: Nws tsis yog yooj yim soluble hauv dej, tab sis nws yog soluble hauv organic solvents xws li ethanol thiab chloroform.
Siv:
Txoj kev:
Muaj ntau ntau txoj hauv kev los npaj melaphenone, thiab cov uas muaj xws li ob qho hauv qab no:
- Synthesis los ntawm oxidation cov tshuaj tiv thaiv: 2-methoxy-3-methylpyridine yog reacted nrog zinc chloride, thiab ces acidified nrog acid kom tau txais metrafenone.
- Synthesis los ntawm kev hloov cov tshuaj tiv thaiv: Methoxy-3-methylpyridine yog reacted nrog ib tug hloov (xws li methyl iodide) nyob rau hauv alkali catalysis kom tau methrenone.
Cov ntaub ntawv kev nyab xeeb:
- Melafenone yog ib yam tshuaj thiab muaj qee yam phom sij.
- Tsis txhob nqus cov plua plav, tiv thaiv daim tawv nqaij thiab qhov muag, thiab tiv thaiv kev noj.
- Hnav cov hnab looj tes tiv thaiv thiab tsom iav kom muaj cua zoo.
- Cov khib nyiab yuav tsum muab pov tseg raws li cov cai hauv cheeb tsam ib puag ncig.
