3 5-difluoropyridine (CAS# 71902-33-5)
| Iikhowudi zoMngcipheko | R36/37/38 – Ukucaphuka kwamehlo, inkqubo yokuphefumla kunye nolusu. R50 – Inetyhefu kakhulu kwizinto eziphila emanzini I-R20/21/22 – Iyingozi ngokuphefumla, xa udibana nolusu naxa uginyiwe. I-R11 – Iyatsha kakhulu |
| Inkcazelo yoKhuseleko | S26 – Xa udibana namehlo, hlambulula ngokukhawuleza ngamanzi amaninzi kwaye ufune iingcebiso zonyango. S36/37/39 – Nxiba iimpahla ezifanelekileyo zokukhusela, iiglavu kunye nokukhusela amehlo/ubuso. S61 –Kuphephe ukukhutshelwa kokusingqongileyo. Jonga kwimiyalelo ekhethekileyo / kumaphepha edatha yokhuseleko. S36/37 – Nxiba iimpahla ezifanelekileyo zokukhusela kunye neeglavu. |
| Izazisi ze-UN | 1993 |
| WGK eJamani | 3 |
| Ikhowudi ye-HS | 29333990 |
| Inqaku Lengozi | Ivutha kakhulu / iyacaphukisa |
| IKlasi yeeNgozi | 3 |
| Iqela lokuPakisha | II |
Intshayelelo
I-3,5-Difluoropyridine i-organic compound kunye ne-chemical formula C5H3F2N. Oku kulandelayo yinkcazo yobume bayo, ukusetyenziswa, ukuqulunqwa kunye nolwazi lokhuseleko:
Indalo:
-Imbonakalo: ulwelo olungenambala
-Indawo yokunyibilika:-53 ℃
-Indawo yokubilisa: 114-116 ℃
-Ubuninzi: 1.32g/cm³
-I-Solubility: Inyibilika emanzini kunye nezinyibilikisi ezininzi zendalo.
Sebenzisa:
- 3,5-Difluoropyridine isetyenziswa ikakhulu njengento ebalulekileyo ekrwada kwi-organic synthesis. Ingasetyenziswa kwi-synthesis ye-pesticides, i-pharmaceuticals kunye nezinye izinto eziphilayo.
-Inokusetyenziswa kwakhona njenge-reagent yekhemikhali yokuhlalutya kunye nophando lweekhemikhali.
Indlela yokulungiselela:
Ukulungiswa kwe-3,5-Difluoropyridine ngokuqhelekileyo kuqhutyelwa ngenye yezi ndlela zilandelayo:
-Ukuqala kwi-pyrimidine, qala ngokuzisa ii-athomu ze-fluorine kwi-pyrimidine, uze ungeze ii-athomu ze-fluorine kwiindawo ezi-3 kunye ne-5.
-ifunyenwe kwi-3,5-difluoro chloropyrimidine okanye i-3,5-difluoro bromopyrimidine reaction.
Ulwazi ngoKhuseleko:
- 3,5-Difluoropyridine inokuba yingozi kumzimba womntu. Ukuvezwa kwikhompawundi kunokubangela ukucaphuka kwamehlo kunye nolusu. Ngoko ke, kuyimfuneko ukuthatha amanyathelo okukhusela ayimfuneko, njengokugqoka iiglavu ezifanelekileyo, izibuko kunye nempahla yokukhusela.
-Xa uchukumisa okanye uphefumula i-3,5-Difluoropyridine, indawo echaphazelekayo kufuneka ihlambuluke ngokukhawuleza kwaye icetyiswa ngugqirha.
-Ngexesha lokugcinwa kunye nokuphathwa, kufuneka kuthathelwe ingqalelo ukuphepha ukudibanisa ne-oxidants enamandla kunye ne-acids eqinile.
Nceda uqaphele ukuba xa usebenzisa kunye nokuphatha i-3,5-Difluoropyridine, soloko ulandela iinkqubo ezichanekileyo zokhuseleko lwebhubhoratri kwaye ubhekisele kumaphepha eenkcukacha zokhuseleko ezifanelekileyo kunye nemiyalelo.
