2-Chloro-5-fluorobenzaldehyde (CAS# 84194-30-9)
Umngcipheko kunye noKhuseleko
| Iikhowudi zoMngcipheko | I-R22 – Iyingozi xa iginyiwe I-R37/38 – Iyacaphukisa inkqubo yokuphefumla kunye nolusu. I-R41 – Umngcipheko womonakalo omkhulu emehlweni |
| Inkcazelo yoKhuseleko | S26 – Xa udibana namehlo, hlambulula ngokukhawuleza ngamanzi amaninzi kwaye ufune iingcebiso zonyango. S39 –Nxiba ukhuseleko lwamehlo / ubuso. |
| IKlasi yeeNgozi | OKUTHUMEKAYO |
Intshayelelo
-Imbonakalo: Ikristale emhlophe okanye ukukhanya okuqinileyo okutyheli.
-Indawo yokunyibilika: malunga ne-40-42 ℃.
-Indawo yokubilisa: malunga ne-163-165 ℃.
-Ubuninzi: malunga ne-1.435g/cm³.
-I-Solubility: Inyibilika kwezinye izinyibilikisi eziqhelekileyo ze-organic, ezifana ne-ethanol, i-chloroform kunye ne-dichloromethane.
Sebenzisa:
Isetyenziselwa kakhulu ukuphendula kweekhemikhali kwi-organic synthesis. Ingasetyenziselwa njenge-intermediate ye-fluorescent dyes, njengento ekrwada kwintsimi yamachiza, nakwintsimi yezolimo ukulungiselela izibulala-zinambuzane.
Indlela yokulungiselela:
inokulungiswa nge-chlorination, i-fluorinated benzaldehyde indlela. Indlela ethile yokulungiselela yile ilandelayo:
1. Ngaphantsi kweemeko ezifanelekileyo, i-hydrofluoric acid yongezwa kwi-benzaldehyde ukuyivumela ukuba ifumane impendulo ye-fluorination.
2. Emva kokusabela, i-hydrogen chloride yongezwa kwi-chlorine kwimveliso ye-fluorinated.
3. ukwenza amanyathelo afanelekileyo okucoca ukufumana iphosphonium ecocekileyo.
Ulwazi ngoKhuseleko:
-izinto ezinobungozi, zinokubangela ukucaphuka kunye nomonakalo kumzimba womntu. Nxiba iiglavu zokukhusela, iiglasi kunye nezixhobo zokukhusela zokuphefumla xa kuyimfuneko.
-Kuphephe ukuphefumla uthuli lwayo okanye igesi, kwaye uphephe ukudibana nolusu namehlo.
-Ngexesha lokugcinwa kunye nokusetyenziswa, iinkqubo zokukhusela iikhemikhali kufuneka zigcinwe, kwaye iimeko ezifanelekileyo zokungenisa umoya kufuneka zigcinwe.
-Ukuvezwa ngengozi okanye ukungeniswa, funa unyango ngokukhawuleza kwaye unikeze idatha efanelekileyo yokhuseleko.
