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

Āhuatanga matū:

Tātai rāpoi C5H6N2
Molar Mass 94.11
Kiato 1.03 g/mL i te 25 °C (marama)
Te Whakarewa -29 °C (marama)
Piro Pouri 135 °C/761 mmHg (marama)
Tohu Kohiko 122°F
Nama JECFA 761
Wairewa wai Ka taea te whakauru ki roto i te wai.
Kohu Kohu 9.69mmHg i te 25°C
Te ahua Waiwai
Tae He maama kore tae ki te paku kowhai
BRN 105778
pKa 1.45(i te 27 ℃)
Tikanga Rokiroki 2-8°C
Taurangi Refactive n20/D 1.504(marama)
Āhuatanga ā-tinana, matū hoki Kiato 1.03
ira whakarewa -29°C
ira kohua 135°C (761 torr)
taupū whakaata 1.5042
ira hiko 50°C
Whakamahi Ka whakamahia i roto i te ahumahi waikano me te ho'oraa, engari ano hoki hei taapiri kai

Taipitopito Hua

Tohu Hua

Waehere Morearea R10 – He mura ahi
R22 – He kino ki te horomia
R36/37/38 – He whakapataritari ki nga kanohi, te punaha manawa me te kiri.
Whakaahuatanga Haumaru S26 – Mena ka pa ki nga kanohi, horoi tonu ki te nui o te wai me te rapu tohutohu hauora.
S36 – Mau kakahu whakamarumaru tika.
S16 – Kia matara atu i nga puna o te mura.
UN ID UN 1993 3/PG 3
WGK Tiamana 3
RTECS UQ3675000
TSCA Ae
Waehere HS 29339990
Te akomanga morearea 3
Roopu Tarapi III

 

Kupu Whakataki

Ko te 2-methylpyridine he pūhui waro. He wai kore tae ki te kowhai kowhai me te haunga rite pyridine.

 

Ko te 2-Methylpyrazine te nuinga o te whakamahi i roto i te whakahiato pararopi hei reagent, whakarewa me te takawaenga. Ka taea te whakamahi hei ligand mo te whakakorikori mo nga tauhohenga whakarewa-catalyzed.

 

He maha nga tikanga mo te whakarite i te 2-methylpyrazine, ko tetahi o nga mea e tino whakamahia ana ko te tauhohenga o te 2-aminopyrazine me nga reagents methylation penei i te methyl iodide. Ko nga tikanga whakahiato motuhake ko te hauwai hauwai me te hauhautanga o te hauhautanga.

I te wa e mahi ana, me mahi pai te whakamahana hau kia kore ai e mau haurehu, e pa ranei ki te kiri me nga kanohi. A ape i te pa atu ki nga waikura kaha me nga waikawa hei aukati i nga tauhohenga kino. Mena ka pa mai, ka werohia ranei, me rapu wawe ki te rongoa.


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