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2-3-Diethyl-5-Methylpyrazine(CAS#18138-04-0 ) Isithombe Esifakiwe
  • 2-3-Diethyl-5-Methylpyrazine(CAS#18138-04-0 ) 1

I-2-3-Diethyl-5-Methylpyrazine(CAS#18138-04-0 )

Isakhiwo Samakhemikhali:

I-Molecular Formula I-C9H14N2
I-Molar Mass 150.22
Ukuminyana 0.949 g/mL ku-25 °C (okhanyisiwe)
I-Boling Point 95 °C (20 mmHg)
I-Flash Point 176°F
Inombolo ye-JECFA 777
Ukuncibilika kwamanzi INXLULEKA KANcane
Ukuncibilika I-Chloroform, iMethanol
I-Vapor Presure 0.515mmHg ku-25°C
Ukubukeka icocekile
I-Gravity ethize 0.950.949
Umbala Kucace Okungenambala
pKa 2?+-.0.10(Kubikezelwe)
Isimo Sesitoreji 2-8°C
I-Refractive Index n20/D 1.498(lit.)
Izakhiwo Zomzimba Nezamakhemikhali Uketshezi oluphuzi kuya kokukhanya olukhanyayo, ikhofi kanye nephunga lezithelo. Incibilika emanzini kodwa i-turbid, incibilika emafutheni nasezincibilikisini eziphilayo, ixubeka ku-ethanol ekamelweni lokushisa. Iphuzu lokubilisa 203 °c. Imikhiqizo yemvelo itholakala ekhofi, ama-hazelnuts, imikhiqizo yamazambane, njll.
Sebenzisa Okwekhofi, inyama, uswidi, 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.
Ama-ID e-UN NA 1993 / PGIII
I-WGK Germany 3
I-TSCA Yebo
Ikhodi ye-HS 29339900
I-Hazard Class 3
Iqembu Lokupakisha III

 

Isingeniso

I-2,3-Diethyl-5-methylpyrazine iyinhlanganisela yezinto eziphilayo, eyaziwa nangokuthi i-DEET (N,N-diethyl-3-methylphenylethylamine).

 

Okulandelayo ezinye zezakhiwo ze-2,3-diethyl-5-methylpyrazine:

 

1. Ukubukeka: I-DEET iwuketshezi olungenambala ukuya kokuphuzi ngokukhanyayo.

2. Iphunga: Inephunga elimnandi, eliphilayo.

3. Ukunyibilika: I-DEET iyancibilika kuma-alcohol, ama-ether kanye nezinyibilikisi eziningi eziphilayo, kodwa inokuncibilika okuphansi emanzini.

 

Ukusetshenziswa okuyinhloko kwe-2,3-diethyl-5-methylpyrazine kufana nokuxosha izifo ezithwala izinambuzane nezinambuzane. Isebenza ngempumelelo ngokumelene nokulunywa yizinambuzane ezihlukahlukene ezinjengomiyane, imikhaza, nezimpukane, njll. I-DEET ivame ukusetshenziswa ekwenzeni imikhiqizo efana nezixosha izinambuzane, amakhoyili omiyane, izinto ezixosha izinambuzane nezifutho ezixosha izinambuzane.

 

Indlela yokulungiselela i-2,3-diethyl-5-methylpyrazine imvamisa yenziwa ngokusabela okungeziwe kwe-benzylamine ne-chloroacetic acid, lapho kukhona i-alkali, ukukhiqiza i-N-benzyl-N-methylacetamide, bese kuthi ngokuphendula kokuphelelwa amanzi emzimbeni ukuze kutholwe. I-DEET. Inqubo ethize yokulungiselela ingalungiswa ngokuya ngezimo ezithile kanye nama-reagents okusabela.

 

Ulwazi Lokuphepha: I-2,3-Diethyl-5-methylpyrazine ibhekwa njengephephile ngaphansi kwezimo ezijwayelekile zokusetshenziswa. Ukuqapha kuyadingeka lapho usebenzisa imiphakathi ethile, njengabantwana, abesifazane abakhulelwe nabancelisayo, kanye nabantu abangezwani ne-DEET. Ukuchayeka okweqile isikhathi eside ku-DEET kungase kubangele imiphumela emibi efana nokungezwani komzimba nesikhumba nokucasuka kwamehlo, ngakho-ke geza izandla zakho nezindawo zesikhumba eziveziwe kahle ngemva kokusetshenziswa. Uma kukhona ukungaphatheki kahle noma ukusabela okubi, yeka ukusebenzisa ngokushesha futhi uthintane nodokotela.

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