Ucingo:+86 21 6460 6569
isibhengezo_sekhasi

umkhiqizo

3 4-Difluorobenzoic acid (CAS# 455-86-7) Isithombe Esifakiwe
  • 3 4-Difluorobenzoic acid (CAS# 455-86-7) 1

3 4-Difluorobenzoic acid (CAS# 455-86-7)

Isakhiwo Samakhemikhali:

I-Molecular Formula I-C7H4F2O2
I-Molar Mass 158.1
Ukuminyana 1.3486 (isilinganiso)
I-Melting Point 120-122°C(lit.)
I-Boling Point 257.0±20.0 °C(Kubikezelwe)
I-Flash Point 109.2°C
Ukuncibilika kwamanzi incibilika kancane emanzini abandayo
Ukuncibilika I-Chloroform (Kancane), i-Methanol (Kancane)
I-Vapor Presure 0.00766mmHg ku-25°C
Ukubukeka Ikristalu eliphuzi elikhanyayo
Umbala Emhlophe
I-BRN 2085848
pKa 3.80±0.10(Okubikezelwe)
Isimo Sesitoreji Kuvalwe endaweni eyomile, Ngezinga lokushisa Legumbi
I-MDL I-MFCD00011672

Imininingwane Yomkhiqizo

Omaka bomkhiqizo

Izimpawu Eziyingozi I-Xn - Iyingozi
Amakhodi Engozi I-R22 – Iyingozi uma igwinywe
R36/37/38 – Ukucasula amehlo, uhlelo lokuphefumula kanye nesikhumba.
Incazelo Yokuphepha S26 – Uma uthintana namehlo, geza ngokushesha ngamanzi amaningi futhi ufune iseluleko sezokwelapha.
I-S37/39 – Gqoka amagilavu ​​afanelekile kanye nokuvikela iso/ubuso
Ama-ID e-UN I-UN 2811
I-WGK Germany 3
Ikhodi ye-HS 29163900

 

Isingeniso

3,4-Difluorobenzoic acid. Okulandelayo yisingeniso semvelo yayo, ukusetshenziswa, indlela yokukhiqiza kanye nolwazi lokuphepha:

 

Ikhwalithi:

- 3,4-Difluorobenzoic acid iyikristale eqinile emhlophe enephunga elimnandi.

- Iqinile ezingeni lokushisa legumbi futhi ingancibilika kuzincibilikisi zemvelo ezifana notshwala, ama-ether, njll., futhi inokuncibilika okulinganiselwe emanzini.

- 3,4-Difluorobenzoic acid ine-asidi futhi ihlangana ne-alkali ukwenza usawoti ohambisanayo.

 

Sebenzisa:

- I-3,4-difluorobenzoic acid isetshenziswa kabanzi njengento ebalulekile ephakathi nendawo eluhlaza ku-organic synthesis.

 

Indlela:

- Ziningi izindlela zokulungiselela i-3,4-difluorobenzoic acid, enye yazo evame ukusetshenziswa yi-fluorinating fluorinated acid.

- Indlela ethile yokulungiselela ihlanganisa ukukhethwa kwe-agent e-fluorinating kanye nokulawulwa kwezimo zokusabela, ama-agent ajwayelekile e-fluorinating yi-hydrogen fluoride, i-sulfur polyfluoride, njll.

 

Ulwazi Lokuphepha:

- I-3,4-Difluorobenzoic acid iyikhemikhali futhi kufanele ilandelwe ngokuhambisana nezinqubo zokuphepha ezifanele kanye nezinto ezifanele zokuvikela amakhemikhali.

- Ingase ibe nomthelela ocasulayo emehlweni, esikhumbeni, nasendleleni yokuphefumula futhi kufanele iwashwe ngokushesha ngemva kokuxhumana.

- Ngesikhathi sokwelashwa, ukuthintana nama-oxidants aqinile nama-acids aqinile kufanele kugwenywe ukuvimbela ukusabela okuyingozi.

- 3,4-Difluorobenzoic acid kufanele igcinwe endaweni epholile, eyomile, enomoya omuhle, kude nomlilo nemithombo yokushisa.

  • Okwedlule:
  • Olandelayo:
    • Bhala umyalezo wakho lapha futhi usithumelele wona

    imikhiqizo ehlobene