ʻaoʻao_banner

huahana

2 6-Dimethylpyridine-4-carboxylic acid(CAS# 54221-93-1)

Waiwai Kemika:

ʻĀpana Molekala C8H9NO2
Molar Mass 151.16
ʻO ka mānoanoa 1.183±0.06 g/cm3 (Wānana ʻia)
Lae hehee 281 °C
Lae Boling 353.1±37.0 °C(Wānana ʻia)
Lae Flash 167.4°C
Puʻupuʻu mahu 1.35E-05mmHg ma 25°C
pKa 2.09±0.10(Wanamua)
Kūlana Waihona ma lalo o ke kinoea inert (nitrogen a i ʻole Argon) ma 2-8°C
Hōʻike Hōʻike 1.553

Huahana Huahana

Huahana Huahana

 

Hoʻolauna

ʻO 2, kahi ʻano mea hoʻohuihui, ʻo C8H9NO2 ke kumu hoʻohālike. He hua ia o ka waikawa nicotinic a ʻike ʻia ma ke ʻano he paʻa kristal kala ʻole.

 

He kiʻekiʻe ka helu heheʻe a me ka helu hoʻolapalapa o ka hui ma ka lumi wela. Hiki ke hoʻoheheʻe ʻia i loko o nā mea hoʻoheheʻe kūlohelohe e like me ka waiʻona, chloroform a me ka etera, ʻoiai ʻo kona solubility i ka wai haʻahaʻa.

 

2, he ākea ka hoʻohana ʻana o ka waikawa i nā kula o ka lāʻau kemika a me ka synthesis organik. Hiki ke hoʻohana ʻia ma ke ʻano he lāʻau lapaʻau waena a i ʻole he catalyst no ka synthesis organik. No ka mea hiki iā ia ke hana i nā paʻakikī me nā ion metala, hiki ke hoʻohana ʻia i ke kemika hoʻonohonoho.

 

ʻO ke ʻano o ka hoʻomākaukau ʻana i ka 2, ka waikawa i hoʻohui pinepine ʻia mai ka mea hoʻomaka o toluene ma o ke ʻano o nā hopena kemika. ʻO nā hana kikoʻī e pili ana i ka methylation, carbonylation, chlorination a me ka acidification.

 

E pili ana i kāna ʻike palekana, 2, pono e mālama ʻia ka ʻakika me ka akahele inā he paʻa a he hopena paha. Hiki ke hoʻonāukiuki i ka ʻili, nā maka a me ka ʻōpū hanu, no laila pono e hoʻohana ʻia nā lako pale pilikino i ka wā o ka hana. Eia kekahi, he mea hiki ke hoʻopau ʻia a pono e mālama ʻia mai nā lapalapa ākea a me nā oxidants ikaika. Pono e mālama ʻia e pale aku i ka hopena me nā kemika ʻē aʻe i ka wā mālama a hoʻohana. Inā loaʻa kahi ulia pōpilikia, pono e lawe koke ʻia nā hana pilikia kūpono a pono e ʻimi ʻia ke kōkua ʻoihana.


  • Mua:
  • Aʻe:

  • E kākau i kāu leka ma aneʻi a hoʻouna mai iā mākou