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2-3-Dimethyl pyrazine (CAS#5910-89-4) Umfanekiso ofakiweyo
  • 2-3-Dimethyl pyrazine (CAS#5910-89-4) 1

2-3-Dimethyl pyrazine (CAS#5910-89-4)

Ipropati yeMichiza:

Ifomula yeemolekyuli C6H8N2
IMisa yeMolar 108.14
Ukuxinana 1.011 g/mL ku-25 °C (lit.)
Indawo yokunyibilika 11-13 °C
Indawo yeBoling 156 °C (lit.)
Indawo yokuflasha 130°F
Inombolo yeJECFA 765
Uxinzelelo loMphunga 3.45mmHg ku-25°C
Imbonakalo ulwelo olucacileyo
Ubunzima obuthile 1.022
Umbala Ayinambala ukuya kwiOrenji yokuKhanya ukuya kumthubi
Ivumba ivumba elithosiweyo, elikhumbuza amantongomane
I-BRN 107908
pKa 2.21±0.10(Kuqikelelwe)
PH 7 (H2O, 20℃)
Imeko yoGcino Umoya ophantsi, uBubushushu beGumbi
Refractive Index n20/D 1.507(lit.)
MDL MFCD07373397
IiPropati zoMzimba kunye nezeMichiza Uxinaniso 1.02
indawo yokunyibilika 11-13°C
iqondo lokubila elingu-156°C
refractive index 1.506-1.508
indawo edanyazayo ngama-54°C

Iinkcukacha zeMveliso

Iithegi zeMveliso

Iikhowudi zoMngcipheko I-R10-Inokutsha
I-R22 – Iyingozi xa iginyiwe
I-R37/38 – Iyacaphukisa inkqubo yokuphefumla kunye nolusu.
I-R41 – Umngcipheko womonakalo omkhulu emehlweni
Inkcazelo yoKhuseleko S16 – Gcina kude kwimithombo yomlilo.
S26 – Xa udibana namehlo, hlambulula ngokukhawuleza ngamanzi amaninzi kwaye ufune iingcebiso zonyango.
S39 –Nxiba ukhuseleko lwamehlo / ubuso.
Izazisi ze-UN UN 1993 3/PG 3
WGK eJamani 3
RTECS UQ2625000
I-TSCA Ewe
Ikhowudi ye-HS 29339990
Inqaku Lengozi Iyacaphukisa/Inokutsha
IKlasi yeeNgozi 3
Iqela lokuPakisha III

 

Intshayelelo

I-2, i-3-Dimethylpyrazine i-organic compound. Oku kulandelayo sintshayelelo kwezinye iipropati zayo, ukusetyenziswa, iindlela zokuvelisa kunye nolwazi lokhuseleko:

 

Umgangatho:

I-2, i-3-Dimethylpyrazine ayinabala ukuya kwikristale eyomeleleyo. Inevumba le-acetone okanye i-ethers kwaye inokunyibilika kwii-alcohols kunye ne-ether solvents.

 

Sebenzisa:

I-2, i-3-Dimethylpyrazine isetyenziswa kakhulu njengezinto zokuqala ze-organic synthesis. Ingasetyenziselwa njenge-catalyst ye-esterification, i-carboxylation kunye ne-enolation phantsi kweemeko ze-alkaline.

 

Indlela:

I-2, i-3-dimethylpyrazine inokulungiswa nge-SN2 endaweni ye-ethyl iododide okanye i-ethyl bromide nge-2-aminopyrazine. Iimeko zokusabela zivame ukuqhutyelwa phambi kwe-alkaline medium, njenge-sodium ethoxide. Emva kokuphendula, imveliso ekujoliswe kuyo ifunyenwe nge-crystallization okanye i-extraction.

 

Ulwazi ngoKhuseleko:

I-2, i-3-Dimethylpyrazine inetyhefu ephantsi phantsi kweemeko eziqhelekileyo zokusetyenziswa. Njengekhemikhali, ukudibana nolusu, amehlo, kunye nephecana lokuphefumla kunokubangela ukucaphuka. Iiprothokholi zesiqhelo zokhuseleko lwaselabhoratri ezinjengokunxiba iiglavu zaselabhoratri zokukhusela, iiglasi, kunye nezixhobo zokhuselo lokuphefumla kufuneka zilandelwe xa zisetyenziswa. Kwimeko yokudibanisa ngengozi okanye ukuphefumla, hlamba okanye ususe indawo echaphazelekayo ngokukhawuleza kwaye ufune iingcebiso zonyango.

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