5-Chloropyridine-2-carboxylic acid (CAS# 86873-60-1)
| Iikhowudi zoMngcipheko | I-R20/21/22 – Iyingozi ngokuphefumla, xa udibana nolusu naxa uginyiwe. R40 – Ubungqina obuncinane besiphumo somhlaza I-R22 – Iyingozi xa iginyiwe |
| Inkcazelo yoKhuseleko | S22 – Musa ukuphefumla uthuli. S36 – Nxiba iimpahla ezifanelekileyo ezikhuselayo. |
| Inqaku Lengozi | Inobungozi |
| IKlasi yeeNgozi | OKUTHUMEKAYO |
Intshayelelo
I-Acid (i-asidi) i-organic compound kunye ne-chemical formula C6H4ClNO2.
Indalo:
Iasidi yikristale emhlophe ukuya kwetyheli ekhanyayo eqinileyo enevumba elikhethekileyo. Iyanyibilika kwezinye izinyibilikisi ze-organic, ezifana ne-ethanol, i-dimethyl sulfoxide kunye ne-dichloromethane, kodwa ine-solubility ephantsi emanzini. Izinzile emoyeni kwaye ibolile kumaqondo aphezulu.
Sebenzisa:
I-Acid yinto ebalulekileyo ye-organic intermediate, esetyenziswa ngokubanzi kwi-synthesis yezinye izinto eziphilayo. Ingasetyenziselwa ukulungiselela izibulala-zinambuzane, iziyobisi, iidayi kunye neekhompawundi zokulungelelanisa.
Indlela yokulungiselela:
I-Acid inokudityaniswa ngeendlela ezahlukeneyo, iindlela ezisetyenziswa ngokuqhelekileyo ziquka ezi zimbini zilandelayo:
1. I-2-picolinic acid chloride iphendulwa nge-chloroacetic acid ukuvelisa imveliso ejoliswe kuyo ngoncedo lwe-catalyst kwaye phantsi kweemeko ezifanelekileyo.
2. uphendule i-2-pyridyl methanol kunye ne-carbonic acid chloride, kwaye emva koko i-hydrolyze nge-asidi ukufumana i-asidi.
Ulwazi ngoKhuseleko:
Ubuthi be-asidi buphantsi, kodwa kusafuneka ukuba ubeke ingqalelo ekusebenzeni okukhuselekileyo. Kuphephe ukudibana ngokuthe ngqo nolusu, amehlo kunye nepheshana lokuphefumla, kwaye unxibe iiglavu zokhuselo, izibuko kunye nemaski ukuba kukho imfuneko. Gwema ukudibanisa kunye ne-oxidizing agents kunye nezinto ezinokutsha ngexesha lokusetyenziswa kunye nokugcinwa. Kufuneka igcinwe kwindawo eyomileyo, engenamoya kakuhle, kude nomlilo. Ukuba utyiwe okanye urholile, funa unyango ngokukhawuleza.
