2-Chloro-3-bromo-5-nitropyridine (CAS# 5470-17-7)
| Iikhowudi zoMngcipheko | I-R25 – Inetyhefu xa iginyiwe I-R41 – Umngcipheko womonakalo omkhulu emehlweni |
| Inkcazelo yoKhuseleko | S26 – Xa udibana namehlo, hlambulula ngokukhawuleza ngamanzi amaninzi kwaye ufune iingcebiso zonyango. S39 –Nxiba ukhuseleko lwamehlo / ubuso. S45 - Kwimeko yengozi okanye ukuba uziva ungaphilanga, funa iingcebiso zonyango ngokukhawuleza (bonisa ileyibhile nanini na kunokwenzeka.) |
| Izazisi ze-UN | 2811 |
| WGK eJamani | 1 |
| IKlasi yeeNgozi | OKUTHUMEKAYO |
| Iqela lokuPakisha | Ⅲ |
Intshayelelo
Yikhompawundi ephilayo enefomula yeekhemikhali yi-C5H2BrClN2O2.
Indalo:
1. Imbonakalo: Iqinile, idla ngokuba ngumgubo wekristale omthubi.
2. I-Solubility: Inokuchithwa kwii-solvents ze-organic (ezifana ne-dichloromethane, i-ether, njl.), Kodwa ukunyibilika kwamanzi kuphantsi.
Sebenzisa:
Yinto ebalulekileyo ephakathi, esetyenziswa ngokubanzi kwintsimi ye-chemical synthesis.
1. I-Drug synthesis: Ingasetyenziselwa ukudibanisa i-biologically active compounds, njengamachiza, i-pesticides, njl.
2. Ukwenziwa kwedayi: Ingasetyenziselwa ukwenza idayi kunye nebala.
3. Ukuhlanganiswa kwamayeza okubulala izitshabalalisi: ingasetyenziselwa amayeza okwenziwa kunye nemichiza yokutshabalalisa ukhula.
Indlela yokuLungiselela: Ulungiselelo lwe
inokuqhutywa nge-aromatic nitration reaction, amanyathelo athile alandelayo:
1. Ngaphantsi kweemeko ezifanelekileyo, i-pyridine iphendulwa nge-nitric acid egxininisiweyo ukufumana i-pyridine-3-nitric acid.
2. I-Pyridine-3-nitric acid iphinda iphendule nge-cuprous bromide ukufumana i-3-bromopyridine.
3. Ekugqibeleni, i-3-bromopyridine iphendulwa nge-chloride yesilivere ukufumana imveliso yokugqibela.
Ulwazi ngoKhuseleko:
1. inomlinganiselo othile wokucaphuka kunye nobuthi, nceda ugweme ukudibanisa nolusu, amehlo kunye nenkqubo yokuphefumula.
2. emsebenzini, kufuneka anxibe iiglavu zokhuselo, iiglasi kunye nemaski kunye nezinye izixhobo zokuzikhusela.
3. ngexesha lokugcinwa kunye nokusetyenziswa, kufuneka ligcinwe ngokwahlukileyo kwizinto ezivuthayo, i-oxidants kunye nezinye izinto.
4. Xa ulahla inkunkuma, nceda uthobele imimiselo yokulahlwa kwenkunkuma yasekuhlaleni ukunciphisa umngcipheko wokungcoliseka kwendalo.
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