2-Bromo-5-nitropyridine (CAS# 4487-59-6)
| Amakhodi Engozi | R25 – Kunobuthi uma ugwinywe R41 – Ingozi yokulimala okubi emehlweni |
| Incazelo Yokuphepha | S26 – Uma uthintana namehlo, geza ngokushesha ngamanzi amaningi futhi ufune iseluleko sezokwelapha. S39 – Gqoka ukuvikela iso / ubuso. S45 – Uma kwenzeka ingozi noma uzizwa ungaphilile, funa iseluleko sezokwelapha ngokushesha (bonisa ilebula noma nini lapho kunokwenzeka.) |
| Ama-ID e-UN | UN 2811 6.1 / PGIII |
| I-WGK Germany | 3 |
Isingeniso
I-2-Bromo-5-nitropyridine iyinhlanganisela ye-organic ene-chemical formula C5H3BrN2O2. Okulandelayo yincazelo yemvelo yayo, ukusetshenziswa, ukulungiswa kanye nolwazi lokuphepha:
Imvelo:
I-2-Bromo-5-nitropyridine iqinile emhlophe enokunambitheka okuncane kwe-oxalic acid. Inokuqina okuphezulu kwe-thermal kanye namakhemikhali. Incibilika kancane emanzini ekamelweni lokushisa, incibilika kuzincibilikisi eziphilayo njenge-ethanol ne-acetone.
Sebenzisa:
I-2-Bromo-5-nitropyridine inezinhlobonhlobo zezinhlelo zokusebenza. Kuyinto ebalulekile eluhlaza futhi ephakathi ku-organic synthesis. Ingasetshenziswa ekuhlanganiseni izibulala-zinambuzane, odayi, izinto ezithatha izithombe kanye nezinhlanganisela zemithi. Ngaphezu kwalokho, ingasetshenziswa futhi njenge-catalyst kanye ne-ligand.
Indlela Yokulungiselela:
I-2-Bromo-5-nitropyridine synthesis izindlela ngokuyinhloko yilezi ezilandelayo:
1. nge-2-bromopyridine kanye ne-nitric acid reaction ngaphansi kwezimo ezine-acidic.
2. nge-3-bromopyridine kanye ne-sodium nitrite yokusabela ngaphansi kwezimo ze-alkali.
Ulwazi Lokuphepha:
I-2-Bromo-5-nitropyridine iyinhlanganisela enobuthi enezingozi ezithile. Naka lezi zinyathelo zokuphepha ezilandelayo ngesikhathi sokusebenzisa nokugcina:
1. gwema ukuhogela uthuli noma umhwamuko, kufanele kube sendaweni enomoya omuhle ukuze usebenze.
2. gwema ukuthinta isikhumba, amehlo kanye nolwelwesi lwamafinyila, njengokuthintana kufanele ugeze ngokushesha ngamanzi amaningi, futhi ufune usizo lwezokwelapha.
3. qaphela izinyathelo zokuvimbela umlilo nokuqhuma, gwema ukuthintana nezinto ezivuthayo.
4. Gcina esitsheni esivaliwe, kude nomlilo kanye ne-oxidant.
5. Lahla ngokuvumelana nemithetho yendawo ukuze ugweme ukukhishwa okuqondile endaweni ezungezile.
Isifinyezo:
I-2-Bromo-5-nitropyridine iyinhlanganisela yemvelo enezinhlobonhlobo zezicelo. Kodwa-ke, ngenxa yobuthi bayo, kuyadingeka ukunaka ukusebenza okuphephile, ukugcinwa okufanele kanye nokulahlwa kwezinto ezisele.
