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umkhiqizo

2-Methyl pyrazine (CAS#109-08-0)

Isakhiwo Samakhemikhali:

I-Molecular Formula I-C5H6N2
I-Molar Mass 94.11
Ukuminyana 1.03 g/mL ku-25 °C (okhanyisiwe)
I-Melting Point -29 °C (ukukhanya)
I-Boling Point 135 °C/761 mmHg (okhanyisiwe)
I-Flash Point 122°F
Inombolo ye-JECFA 761
Ukuncibilika kwamanzi Kuxutshwe ngokuphelele emanzini.
I-Vapor Presure 9.69mmHg ku-25°C
Ukubukeka Uketshezi
Umbala Kucace kungenambala ukuya kokuphuzi kancane
I-BRN 105778
pKa 1.45(ku-27℃)
Isimo Sesitoreji 2-8°C
I-Refractive Index n20/D 1.504(lit.)
Izakhiwo Zomzimba Nezamakhemikhali Ukuminyana 1.03
izinga lokuncibilika -29°C
indawo abilayo 135°C (761 torr)
inkomba ye-refractive 1.5042
iphoyinti elikhanyayo 50°C
Sebenzisa Isetshenziswa embonini yedayi neyokwenza imithi, kodwa futhi njengesengezo sokunambitha ukudla

Imininingwane Yomkhiqizo

Omaka bomkhiqizo

Amakhodi Engozi U-R10 – Uyavutha
I-R22 – Iyingozi uma igwinywe
R36/37/38 – Ukucasula amehlo, uhlelo lokuphefumula kanye nesikhumba.
Incazelo Yokuphepha S26 – Uma uthintana namehlo, geza ngokushesha ngamanzi amaningi futhi ufune iseluleko sezokwelapha.
S36 – Gqoka izingubo ezifanele zokuzivikela.
S16 – Zigcine kude nemithombo yokuthungela.
Ama-ID e-UN UN 1993 3/PG 3
I-WGK Germany 3
I-RTECS UQ3675000
I-TSCA Yebo
Ikhodi ye-HS 29339990
I-Hazard Class 3
Iqembu Lokupakisha III

 

Isingeniso

I-2-methylpyridine iyinhlanganisela yezinto eziphilayo. Iwuketshezi oluphuzi olukhanyayo olungenambala ukuya kokuphaphathekile olunephunga elifana ne-pyridine.

 

I-2-Methylpyrazine ivame ukusetshenziswa ku-organic synthesis njenge-reagent, i-solvent kanye ne-intermediate. Ingasetshenziswa njenge-ligand ye-catalysts ye-metal-catalyzed reactions.

 

Kunezindlela ezihlukahlukene zokulungiselela i-2-methylpyrazine, enye yezindlela ezivame ukusetshenziswa kakhulu ukusabela kwe-2-aminopyrazine nama-reagents e-methylation njenge-methyl iodide. Izindlela eziqondile zokuhlanganisa zihlanganisa i-cyanide hydrogenation kanye ne-halogenation ye-halogenation.

Lapho usebenza, izinyathelo ezinhle zokungenisa umoya kufanele zithathwe ukugwema ukuhogela amagesi noma ukuthintana nesikhumba namehlo. Gwema ukuthintana nama-oxidants aqinile nama-asidi ukuze uvimbele ukusabela okuyingozi. Uma uthintana ngephutha noma uhogele umoya, funa usizo lwezempilo ngokushesha.


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