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2 3-DIBROMO-5-CHLORO PYRIDINE (CAS# 137628-17-2) Isithombe Esifakiwe
  • 2 3-DIBROMO-5-CHLORO PYRIDINE (CAS# 137628-17-2) 1

2 3-DIBROMO-5-CHLORO PYRIDINE (CAS# 137628-17-2)

Isakhiwo Samakhemikhali:

I-Molecular Formula I-C5H2Br2ClN
I-Molar Mass 271.34
Ukuminyana 2.136±0.06 g/cm3(Kubikezelwe)
I-Melting Point 41.0 kuya ku-45.0 °C
I-Boling Point 259.9±35.0 °C(Kubikezelwe)
I-Flash Point 111.004°C
I-Vapor Presure 0.02mmHg ku-25°C
Ukubukeka Ikristalu eliphuzi eliphaphathekile
pKa -3.85±0.20(Kubikezelwe)
Isimo Sesitoreji Umkhathi ongenayo, izinga lokushisa legumbi
I-Refractive Index 1.62
I-MDL MFCD08687254

Imininingwane Yomkhiqizo

Omaka bomkhiqizo

Ubungozi Nokuphepha

Amakhodi Engozi R36/37/38 – Ukucasula amehlo, uhlelo lokuphefumula kanye nesikhumba.
R25 – Kunobuthi uma ugwinywe
Incazelo Yokuphepha S26 – Uma uthintana namehlo, geza ngokushesha ngamanzi amaningi futhi ufune iseluleko sezokwelapha.
S37 – Gqoka amagilavu ​​afanelekile.
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-Hazard Class I-IRRITANT

2 3-DIBROMO-5-CHLORO PYRIDINE (CAS# 137628-17-2) isingeniso

I-2,3-dibromo-5-chloropyridine iyinhlanganisela yezinto eziphilayo. Okulandelayo yisethulo sezakhiwo, ukusetshenziswa, izindlela zokulungisa, kanye nolwazi lokuphepha kwenhlanganisela:

imvelo:
-Ukubukeka: I-2,3-dibromo-5-chloropyridine iqinile engenambala ukuya kokuphuzi.
-I-Solubility: Ine-solubility ephezulu kuzincibilikisi eziphilayo kodwa i-solubility ephansi emanzini.

Inhloso:
I-2,3-dibromo-5-chloropyridine inohlu olubanzi lwezicelo ku-organic synthesis, ikakhulukazi esetshenziswa kulezi zindawo ezilandelayo:
-Njenge-photosensitizer, ingasetshenziswa emikhakheni efana nokuphrinta nokukhiqizwa kwezithombe.

Indlela yokukhiqiza:
Indlela yokulungiselela i-2,3-dibromo-5-chloropyridine ingenziwa ngezinyathelo ezilandelayo:
Ngaphansi kwezimo ezifanele, phendula i-2,3-dibromopyridine ne-phosphorus pentachloride ukukhiqiza i-2,3-dibromo-5-chloropyridine pentachloride.
Bese, phendula i-pentachloride nge-sodium hydroxide noma ezinye izixazululo ze-alkaline ukuze uthole i-2,3-dibromo-5-chloropyridine.

Ulwazi lokuphepha:
-Ukusetshenziswa nokusebenza kwe-2,3-dibromo-5-chloropyridine kufanele kwenziwe endaweni enomoya omuhle ukuze kugwenywe ukuchayeka isikhathi eside ephunga layo noma uthuli.
-Ngesikhathi sokusebenza, izinto zokuzivikela ezifanele kufanele zigqokwe, okuhlanganisa amagilavu ​​okuvikela amakhemikhali, izibuko, nezingubo zokuzivikela.
-2,3-dibromo-5-chloropyridine ingeyama-bromide ephilayo futhi inobuthi obuthile nokucasuka. Kumele iphathwe futhi igcinwe ngendlela efanele ukugwema ukuthintana nezinto ezivuthayo kanye namazinga okushisa aphezulu.
-Uma usebenzisa futhi ulahla lesi sakhiwo, sicela ulandele izimfuneko zezinqubo zokusebenza zokuphepha kanye nemithetho neziqondiso ezifanele.

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