page_banner

hua

2 4-Dibromopyridine(CAS# 58530-53-3)

Āhuatanga matū:

Tātai rāpoi C5H3Br2N
Molar Mass 236.89
Kiato 2.059±0.06 g/cm3(Te Matapae)
Te Whakarewa 35-40 °C
Piro Pouri 238°C(marama)
Tohu Kohiko >110℃
Wairewa wairewa ki Methanol
Kohu Kohu 0.0321mmHg i te 25°C
Te ahua te paura ki te putunga ki te wai whakamaarama
Tae Ma, Taekore ranei ki Tata ki te ma, Tata kore tae ranei
pKa 0.17±0.10(I Matapaetia)
Tikanga Rokiroki Puritia ki te wahi pouri, Hiri ki te maroke, Te Pawera Rua
Tairongo Hygroscopic
Taurangi Refactive 1.607
MDL MFCD01859720

Taipitopito Hua

Tohu Hua

Waehere Morearea R20/21/22 – He kino ma te horomia, ka pa ki te kiri me te horomia.
R36/37/38 – He whakapataritari ki nga kanohi, te punaha manawa me te kiri.
R22 – He kino ki te horomia
Whakaahuatanga Haumaru S26 – Mena ka pa ki nga kanohi, horoi tonu ki te nui o te wai me te rapu tohutohu hauora.
S36/37/39 – Mau kakahu whakamarumaru tika, karapu me te whakamarumaru kanohi/kanohi.
S36 – Mau kakahu whakamarumaru tika.
S37 – Me mau karapu pai.
S22 – Kaua e pupuhi puehu.
UN ID 2811
WGK Tiamana 1
Te akomanga morearea TANGATA
Roopu Tarapi

 

Kupu Whakataki

Ko te 2,4-Dibromopyridine he pūhui waro. E whai ake nei he kupu whakataki mo tona ahuatanga, te whakamahinga, te tikanga whakarite me nga korero haumaru:

 

Kounga:

- Te ahua: Ko te 2,4-dibromopyridine he totoka kowhai kowhai marama ranei.

- Wairewa: 2,4-dibromopyridine he wairewa i roto i te nuinga o nga whakarewa waro penei i te waihano, te dimethyl sulfoxide me te chloroform.

 

Whakamahia:

- Waikano: He takawaenga waikano e whakamahia nuitia ana hei whakahiato i nga tae me nga tae rereke.

 

Tikanga:

Ka taea te whakarite 2,4-Dibromopyridine ma nga tikanga e whai ake nei:

- Bromination Catalyst: I raro i nga tikanga kawakore, ka taea te whiwhi 2,4-dibromopyridine ma te tauhohe i te pyridine me te kaihoko brominating.

- Waro-deuterium chiral halogenation tauhohenga: 2,4-dibromopyridine ka whiwhi ma te tauhohe i te tïpako ki te bromine.

 

Mōhiohio Haumaru:

Ko te haumaru me te whakamahinga o te 2,4-dibromopyridine me aro ki nga waahanga e whai ake nei:

- He paitini tenei pūhui, ā, me āta whakahaere.

- Ko nga taputapu whakamarumaru whaiaro e tika ana penei i nga karapu, karawhiu me nga kakahu whakamarumaru me mau i te wa e whakahaere ana me te whakamahi.

- A ape i te hongi i te puehu me te pa atu ranei ki te kiri me nga kanohi.

- Me whakahaere i roto i te waahi pai te hau me te karo i te pa ki te puna ahi kia kore ai e mau te ahi, e pahū ranei.

- Me whai nga tikanga whakahaere haumaru tika i te wa e whakahaere ana me te rokiroki.

 


  • Tōmua:
  • Panuku:

  • Tuhia to korero ki konei ka tukuna mai ki a matou