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2-Mercapto Pyrazine (CAS#38521-06-1)

Thepa ea Lik'hemik'hale:

Foromo ea limolek'hule C4H4N2S
'Misa oa Molar 112.15
Botenya 1.30±0.1 g/cm3(E boletsoeng esale pele)
Melting Point 207-213°C
Boling Point 191.3±23.0 °C(E boletsoeng esale pele)
Flash point 69.5°C
Khatello ea Mouoane 0.519mmHg ho 25°C
Ponahalo phofo ho kristale
Mmala Bosehla bo kganyang ho ya ho Brown
pKa 8.44±0.20(E boletsoeng esale pele)
Boemo ba polokelo 2-8°C
Refractive Index 1.662

Lintlha tsa Sehlahisoa

Li-tag tsa Sehlahisoa

WGK Jeremane 3

 

Selelekela

2-Mercaptopyrazine ke motsoako oa tlhaho o nang le foromo ea lik'hemik'hale C4H4N2S. Ke 'mala o mosoeu oa kristale o monko o monate. E latelang ke tlhaloso ea mofuta, tšebeliso, tokiso le tlhaiso-leseling ea polokeho ea 2-Mercaptopyrazine:

 

Tlhaho:

-Ponahalo: E tiileng ka kristale e tšoeu

- Boima ba limolek'hule: 112.16g / mol

- sebaka se qhibilihang: 80-82 ℃

- Sebaka se belang: hoo e ka bang 260 ℃ (ho bola)

-Soluble: E qhibiliha ka asiti, alkali, ethanol le ether, e qhibiliha hanyane ka metsing.

 

Sebelisa:

- 2-Mercaptopyrazine e ka sebelisoa e le setsi sa bohlokoa sa lipakeng tsa organic synthesis 'me e ka bapala karolo ea bohlokoa ho kopantsoeng ha lithethefatsi le chefo e bolaeang likokoanyana.

-E ka sebelisoa ho lokisa lidae tsa pyrazine, li-intermediate tsa meriana le metsoako ea ho hokahanya.

 

Mokhoa oa ho itokisa:

2-Mercaptopyrazine e ka etsoa:

1. Karabelo ea 2-bromopyrazine e nang le sodium hydrogen sulfate metsing / ethanol ho fana ka 2-Mercaptopyrazine. Maemo a karabelo ka kakaretso a joalo hoo karabelo e tsosoang mocheso oa kamore.

2. 2-Mercaptopyrazine e ka boela ea fumanoa ka ho arabela 2-chloropyrazine le thiol tlas'a maemo a alkaline.

 

Lintlha tsa Tšireletseho:

- 2-Mercaptopyrazine ke motsoako o halefisang o ka bakang ho halefa ha ho kopana le letlalo, mahlo kapa ka ho hema lerōle la eona.

-Apara lisebelisoa tsa ho itšireletsa tse kang li-gloves tse sireletsang lik'hemik'hale, likhalase tsa tšireletso le limaske tse sireletsang ha u tšoara 2-Mercaptopyrazine.

-Ha o sebelisa motsoako ona, ka kopo etsa bonnete ba hore o sebetsa sebakeng se nang le moea o motle ho qoba ho hema lerōle la lona.

- Qoba ho kopana le li-oxidants le li-acid tse matla ho thibela liketso tse kotsi.

- Boloka 2-Mercaptopyrazine ka har'a setshelo se sa keneng moea, hole le mocheso le mehloli ea mollo.


  • E fetileng:
  • E 'ngoe:

  • Ngola molaetsa wa hao mona mme o re romele wona