2-Cyano-4-methylpyridine (CAS# 1620-76-4)
Umngcipheko kunye noKhuseleko
| Iimpawu ezinobungozi | Xi – Irritant |
| Iikhowudi zoMngcipheko | I-R20/21/22 – Iyingozi ngokuphefumla, xa udibana nolusu naxa uginyiwe. I-R41 – Umngcipheko womonakalo omkhulu emehlweni I-R37/38 – Iyacaphukisa inkqubo yokuphefumla kunye nolusu. I-R22 – Iyingozi xa iginyiwe R36/37/38 – Ukucaphuka kwamehlo, inkqubo yokuphefumla kunye nolusu. |
| Inkcazelo yoKhuseleko | S22 – Musa ukuphefumla uthuli. S36/37 – Nxiba iimpahla ezifanelekileyo zokukhusela kunye neeglavu. S39 –Nxiba ukhuseleko lwamehlo / ubuso. S26 – Xa udibana namehlo, hlambulula ngokukhawuleza ngamanzi amaninzi kwaye ufune iingcebiso zonyango. S36 – Nxiba iimpahla ezifanelekileyo ezikhuselayo. |
| Izazisi ze-UN | 3276 |
| WGK eJamani | 3 |
| Ikhowudi ye-HS | 29333990 |
| IKlasi yeeNgozi | 6.1 |
| Iqela lokuPakisha | III |
2-Cyano-4-methylpyridine (CAS# 1620-76-4) Ulwazi
| Isicelo | I-2-cyano-4-methylpyridine yi-organic intermediate, enokuthi iqale i-oxidized ukusuka kwi-4-methylpyridine ukulungiselela i-4-Methyl-pyridine-N-oxide, kwaye ifakwe endaweni yeqela le-cyano ukufumana. I-4-methyl-pyridine-N-oxide ingasetyenziselwa ukulungiselela i-4-methyl -2, i-6-dicarboxypyridine, i-4-methyl -2, i-6-dicarboxypyridine i-derivative eluncedo kakhulu ye-pyridine kunye ne-compound ebaluleke kakhulu ephakathi, esetyenziswa ngokubanzi. kwintsimi yekhemesti. |
| ukulungiselela | I-4-methyl-pyridine-N-oxide (0.109g, 1mmol), i-trimethylcyanosilane (0.119g, 1.2mmol), i-H-diethyl phosphite (0.276g, 2mmol), i-carbon tetrachloride (0.308g, 2mmol), i-triethylamine (0.202g, 2mmol) kunye ne-acetonitrile 10mL kwi-a I-50mL i-flask yomlomo emithathu, iphendule kwiqondo lokushisa kwe-6h. Emva kokuba i-reaction igqityiwe, i-solvent isuswe phantsi koxinzelelo oluncitshisiweyo kwaye ihlukaniswe yikholomu ye-chromatography (i-petroleum ether / i-ethyl acetate, i-V / V = 4: 1) ukufumana i-compound ejoliswe kuyo yolwelo olungenambala kunye ne-80% yesivuno. |
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