3 5-Dichloropyridine (CAS # 2457-47-8)
| Risk Codes | R22 - Ua phem yog tias nqos R37/38 - Kab mob ua pa thiab tawv nqaij. R41 - Riam phom loj rau qhov muag R36/37/38 - Kab mob rau qhov muag, ua pa thiab tawv nqaij. |
| Kev nyab xeeb piav qhia | S26 - Thaum sib cuag nrog lub qhov muag, yaug tam sim ntawd nrog dej txaus thiab nrhiav kev kho mob. S39 - Hnav qhov muag / ntsej muag tiv thaiv. S36 - Hnav khaub ncaws tiv thaiv zoo. |
| UN IDs | UN 2811 |
| WGK Germany | 3 |
| RTECS | US8575000 |
| HS Code | 293339 0 |
| Kev Ceeb Toom | Irritant |
| Hazard Class | 6.1 |
Taw qhia
3,5-Dichloropyridine yog ib qho organic compound. Nws yog cov kua uas tsis muaj xim nrog lub zog pungent tsw.
3,5-dichloropyridine kuj tau nkag siab nrog sodium hydroxide los tsim cov pa roj hydrogen chloride.
3,5-Dichloropyridine muaj ntau yam kev siv hauv cov txheej txheem organic synthesis. Nws tuaj yeem siv los ua tus neeg sawv cev tseem ceeb rau kev sib txuas ntawm ketones.
Muaj ntau txoj hauv kev los npaj 3,5-dichloropyridine. Ib txoj hauv kev yog tau los ntawm kev ua pa pyridine nrog cov roj chlorine. Cov kauj ruam tshwj xeeb suav nrog: kev taw qhia cov roj chlorine rau hauv cov tshuaj uas muaj pyridine nyob rau hauv qhov tsim nyog cov tshuaj tiv thaiv. Tom qab cov tshuaj tiv thaiv, 3,5-dichloropyridine cov khoom raug ntxuav los ntawm distillation.
Thaum siv 3,5-dichloropyridine yuav tsum tau ua raws li cov txheej txheem kev nyab xeeb, thiab cov khoom siv tiv thaiv yuav tsum hnav. Tsis txhob sib cuag nrog daim tawv nqaij, qhov muag, thiab cov mucous daim nyias nyias. Yuav tsum tau saib xyuas kom tsis txhob muaj kev cuam tshuam nrog lwm cov tshuaj thaum tuav thiab khaws cia kom tsis txhob muaj kev phom sij. Thaum lub sij hawm cia, 3,5-dichloropyridine yuav tsum tau khaws cia rau hauv lub thawv airtight thiab muab tso rau hauv qhov chaw txias, qhuav.
