5-Chloro-2-fluoro-3-methylpyridine (CAS # 375368-84-6)
| Hazard Cov Cim | Xn – Ua phem |
| Risk Codes | R22 - Ua phem yog tias nqos R37/38 - Kab mob ua pa thiab tawv nqaij. R41 - Riam phom loj rau qhov muag |
| 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. |
Taw qhia
Nws yog ib qho organic compound nrog cov mis C6H5ClFN. Nws yog cov kua tsis muaj xim uas muaj ntxhiab tsw tshwj xeeb. Cov hauv qab no yog cov lus piav qhia ntawm nws qhov xwm txheej, kev siv, kev npaj thiab cov ntaub ntawv kev nyab xeeb:
Xwm:
-Cov tsos mob: cov kua tsis muaj xim
- ntxhiab tsw: tshwj xeeb tsw
Qhov ceev: 1.36 g / mL
-Boiling point: 137-139 ℃
- Melting point: -4 ℃
-Solubility: Miscible nrog cov organic solvents, yuav luag insoluble hauv dej.
Siv:
Nws yog dav siv nyob rau hauv cov organic synthesis thiab yuav siv tau raws li ib tug catalyst los yog raw khoom. Nws muaj cov ntawv thov tseem ceeb hauv kev sib txuas ntawm cov tshuaj tua kab, tshuaj thiab tshuaj, thiab feem ntau siv rau hauv kev tsim cov tshuaj tua kab, dyes, cov kuab tshuaj, thiab lwm yam.
Preparation Method: Txoj kev npaj ntawm
yog qhov nyuaj dua. Txoj kev npaj dav dav yog kom tau 5-chloro -2-oxo -3-methyl pyridine los ntawm chloro-propionaldehyde cov tshuaj tiv thaiv los ntawm pyridine ua raw khoom, thiab tau txais cov khoom kawg los ntawm cov tshuaj fluorination.
Cov ntaub ntawv kev nyab xeeb:
Nws yog ib qho organic compound, thiab kev ceev faj txog kev nyab xeeb hauv qab no yuav tsum tau them sai sai rau thaum siv nws:
-Toxicity yuav tshwm sim los ntawm kev nqus pa, tiv tauj lossis noj. Kev sib cuag ncaj qha nrog daim tawv nqaij, qhov muag thiab cov mucous daim nyias nyias yuav tsum tau zam.
- Hnav cov khoom tiv thaiv tsim nyog xws li hnab looj tes, tsom iav thiab khaub ncaws tiv thaiv thaum siv.
-Tsis txhob sib cuag nrog oxidants, muaj zog acids, muaj zog hauv paus thiab lwm yam khoom kom tsis txhob muaj kev cuam tshuam tsis zoo.
-Thaum cov dej xau tshwm sim, cov kev ntsuas tsim nyog yuav tsum tau ua los ntxuav cov dej ntws tawm thiab tsis txhob nkag mus rau hauv cov kav dej thiab ib puag ncig.
Thaum siv cov khoom sib xyaw, siv cov kev ntsuas kev nyab xeeb raws li qhov xwm txheej tiag tiag thiab xa mus rau cov ntaub ntawv kev nyab xeeb ntawm cov khoom sib xyaw.
