2-Cyano-4-methylpyridine (CAS # 1620-76-4)
Risk thiab Safety
| Hazard Cov Cim | Xi-xaj |
| Risk Codes | R20/21/22 - Ua phem los ntawm kev nqus pa, tiv thaiv daim tawv nqaij thiab yog tias nqos. R41 - Riam phom loj rau qhov muag R37/38 - Kab mob ua pa thiab tawv nqaij. R22 - Ua phem yog tias nqos R36/37/38 - Kab mob rau qhov muag, ua pa thiab tawv nqaij. |
| Kev nyab xeeb piav qhia | S22 - Tsis txhob nqus plua plav. S36/37 - Hnav cov khaub ncaws tiv thaiv thiab hnab looj tes tsim nyog. S39 - Hnav qhov muag / ntsej muag tiv thaiv. S26 - Thaum sib cuag nrog lub qhov muag, yaug tam sim ntawd nrog dej txaus thiab nrhiav kev kho mob. S36 - Hnav khaub ncaws tiv thaiv zoo. |
| UN IDs | ib 3276 |
| WGK Germany | 3 |
| HS Code | 293339 0 |
| Hazard Class | 6.1 |
| Packing Group | III |
2-Cyano-4-methylpyridine (CAS # 1620-76-4) Cov ntaub ntawv
| Daim ntawv thov | 2-cyano-4-methylpyridine yog cov organic nruab nrab, uas tuaj yeem ua ntej oxidized los ntawm 4-methylpyridine los npaj 4-Methyl-pyridine-N-oxide, thiab tom qab ntawd hloov nrog cyano pawg kom tau txais. 4-methyl-pyridine-N-oxide tuaj yeem siv los npaj 4-methyl -2, 6-dicarboxypyridine, 4-methyl -2, 6-dicarboxypyridine yog ib qho tseem ceeb heev pyridine derivative thiab tseem ceeb heev intermediate compound, uas yog dav siv. nyob rau hauv lub chaw muag tshuaj. |
| kev npaj | 4-methyl-pyridine-N-oxide (0.109g, 1mmol), trimethylcyanosilane (0.119g, 1.2mmol), H-diethyl phosphite (0.276g, 2mmol), carbon tetrachloride (0.308g, 2mmol), triethylamine (0.202g, 2 mmol) thiab acetonitrile 10 mL hauv a 50mL peb-lub qhov ncauj hwj, hnov nyob rau hauv chav tsev kub rau 6h. Tom qab cov tshuaj tiv thaiv tiav lawm, cov kuab tshuaj raug tshem tawm hauv qhov txo qis thiab sib cais los ntawm kem chromatography (petroleum ether / ethyl acetate, V / V = 4: 1) kom tau txais cov xim tsis muaj kua hom phiaj nrog 80% tawm los. |
Sau koj cov lus ntawm no thiab xa tuaj rau peb
