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2-Acetyl-3-ethyl pyrazine (CAS#32974-92-8) Isithombe Esifakiwe
  • 2-Acetyl-3-ethyl pyrazine (CAS#32974-92-8) 1

2-Acetyl-3-ethyl pyrazine (CAS#32974-92-8)

Isakhiwo Samakhemikhali:

I-Molecular Formula I-C8H10N2O
I-Molar Mass 150.18
Ukuminyana 1.075g/mLat 25°C(lit.)
I-Melting Point I-EU Regulation 1223/2009
I-Boling Point 54-56°C1mm Hg(lit.)
I-Flash Point 188°F
Inombolo ye-JECFA 785
I-Vapor Presure 0.0258mmHg ku-25°C
Ukubukeka uketshezi olucacile
Umbala Okusawolintshi okukhanyayo ukuya kokuphuzi ukuya kokuluhlaza
I-BRN 742901
pKa 0.56±0.10(Okubikezelwe)
Isimo Sesitoreji Kuvalwe endaweni eyomile, Ngezinga lokushisa Legumbi
I-Refractive Index n20/D 1.515(lit.)
I-MDL I-MFCD00038028
Izakhiwo Zomzimba Nezamakhemikhali Amakristalu aphuzi kuya kokukhanya okukhanyayo, amantongomane, ama-popcorn, iphunga lesikhumba sesinkwa, isikhutha kanye nephunga lamazambane. Iphoyinti lokubilisa 188 °c noma 55 °c (147Pa). Incibilika kancane emanzini, incibilika kuzincibilikisi zemvelo ne-ethanol (i-ethanol ingase ibonakale iyi-turbid). Imikhiqizo yemvelo itholakala esibindini sezingulube, i-cocoa, njll.

Imininingwane Yomkhiqizo

Omaka bomkhiqizo

Izimpawu Eziyingozi Xi - Irritant
Amakhodi Engozi 36/37/38 - Ukucasula amehlo, uhlelo lokuphefumula kanye nesikhumba.
Incazelo Yokuphepha S26 – Uma uthintana namehlo, geza ngokushesha ngamanzi amaningi futhi ufune iseluleko sezokwelapha.
S36/37/39 – Gqoka izingubo zokuzivikela ezifanele, amagilavu ​​kanye nokuvikela iso/ubuso.
I-WGK Germany 3
I-TSCA Yebo
Ikhodi ye-HS 29339900

 

Isingeniso

I-2-Acetyl-3-ethylpyrazine iyinhlanganisela yezinto eziphilayo. Okulandelayo yisethulo sezakhiwo, ukusetshenziswa, izindlela zokulungiselela kanye nolwazi lokuphepha kwenhlanganisela:

 

Izakhiwo: I-2-acetyl-3-ethylpyrazine iyikristale engenambala eqinile enesakhiwo esikhethekile se-nitrogen heterocyclic. Inokuqina okuphezulu kanye nokungaguquguquki ekamelweni lokushisa. Incibilika kalula kwezinye izinyibilikisi eziphilayo futhi ayincibiliki kancane emanzini.

 

Ukusetshenziswa: I-2-acetyl-3-ethylpyrazine inohlu olubanzi lokusetshenziswa ku-organic synthesis. Ingasetshenziswa njenge-catalyst ephumelelayo yokusabela okuningi okubalulekile kwe-organic, njenge-carbonylation, i-oxidation, ne-amination.

 

Indlela yokulungiselela: Kunezindlela eziningi zokulungiselela i-2-acetyl-3-ethylpyrazine, futhi indlela evame ukusetshenziswa itholakala ngokusabela i-acetylformamide ne-3-ethylpyrazine. Ngokuqondile, i-acetoformamide ne-3-ethylpyrazine kuqala ixutshwe, ishiswa ngaphansi kwezimo ezifanele, bese umkhiqizo ohlosiwe utholakala nge-crystallization nokuhlanza.

Kungase kucasule amehlo, isikhumba, nesimiso sokuphefumula, futhi izinto zokuzivikela ezifanele njengezibuko, amagilavu, nezifihla-buso zokuzivikela kufanele zigqokwe lapho usebenza. Uma kwenzeka ukuthintana ngephutha noma uhogele lesi sithako, geza noma uthintane nodokotela ngokushesha.

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