2-Fluoro-5-bromo-3-methylpyridine (CAS # 29312-98-9)
| Risk Codes | R20/21/22 - Ua phem los ntawm kev nqus pa, tiv thaiv daim tawv nqaij thiab yog tias nqos. R36/37/38 - Kab mob rau qhov muag, ua pa thiab tawv nqaij. R41 - Riam phom loj rau qhov muag R37/38 - Kab mob ua pa thiab tawv nqaij. R22 - Ua phem yog tias nqos |
| 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. S36 - Hnav khaub ncaws tiv thaiv zoo. S39 - Hnav qhov muag / ntsej muag tiv thaiv. S37 - Hnav cov hnab looj tes tsim nyog. |
| HS Code | 29339900 ib |
| Hazard Class | IRRITANT |
Taw qhia
Nws yog ib qho organic compound nrog cov tshuaj formula C7H6BrFN.
Xwm:
-Cov tsos mob: tsis muaj xim rau cov kua daj daj
- Melting point: -3 ℃
-Boiling point: 204-205 ℃
- Qhov ceev: 1.518g / cm³
-Solubility: me ntsis soluble nyob rau hauv dej, soluble nyob rau hauv feem ntau cov organic solvents
Siv:
Nws yog tsuas yog siv nyob rau hauv cov organic synthesis ua ib qho tseem ceeb nruab nrab. Nws tuaj yeem siv los tsim cov tshuaj, tshuaj tua kab thiab lwm cov organic sib txuas.
Txoj kev:
Txoj kev npaj yog raws li nram no:
1. Los ntawm 2-fluoropyridine thiab ib tug npaum li cas ntawm methyl bromide nyob rau hauv lub xub ntiag ntawm oxidant chlorine los yog carbon peroxide cov tshuaj tiv thaiv.
2. Nws yog npaj los ntawm cov tshuaj tiv thaiv ntawm 2-bromo-5-fluoropyridine thiab methyl lithium.
Cov ntaub ntawv kev nyab xeeb:
Tej zaum nws yuav khaus thiab corrosive rau tib neeg lub cev, yog li koj yuav tsum tau ua tib zoo saib xyuas kev nyab xeeb kev ntsuas thaum siv nws, suav nrog cov hnab looj tes tiv thaiv, tsom iav thiab khaub ncaws tiv thaiv. Tsis txhob nqus nws cov vapors lossis tiv nrog daim tawv nqaij thiab qhov muag. Yog tias nqus tau los yog raug rau qhov sib xyaw ua ke, ntxuav qhov chaw cuam tshuam tam sim ntawd thiab nrhiav kev pab kho mob yog tias tsim nyog.
