2 5-Dibromo-3-methylpyridine (CAS # 3430-18-0)
| Risk Codes | R22 - Ua phem yog tias nqos R36/38 - Kab mob rau qhov muag thiab tawv nqaij. R36/37/38 - Kab mob rau qhov muag, ua pa thiab tawv nqaij. R20/21/22 - Ua phem los ntawm kev nqus pa, tiv thaiv daim tawv nqaij thiab 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. S36/37/39 - Hnav cov khaub ncaws tiv thaiv tsim nyog, hnab looj tes thiab tiv thaiv qhov muag / ntsej muag. S36 - Hnav khaub ncaws tiv thaiv zoo. |
| UN IDs | UN 2811 6.1/PG 3 |
| WGK Germany | 3 |
| HS Code | 293339 0 |
| Hazard Class | 6.1 |
| Packing Group | III |
Taw qhia
2,5-Dibromo-3-trimethylpyridine yog cov organic compound. Cov hauv qab no yog kev qhia txog qee yam ntawm nws cov khoom, kev siv, kev tsim khoom thiab cov ntaub ntawv kev nyab xeeb:
Zoo:
- Cov tsos mob: 2,5-Dibromo-3-trimethylpyridine yog cov kua tsis muaj xim rau daj ntseg daj.
- Solubility: Nws tuaj yeem yaj hauv ntau cov kuab tshuaj organic, xws li ethanol, acetone, thiab dimethyl sulfoxide.
- Stability: Nws yog qhov ruaj khov rau lub teeb thiab cua sov, tab sis decomposition tuaj yeem tshwm sim nyob rau hauv muaj zog alkaline tej yam kev mob.
Siv:
- Raws li cov catalyst: 2,5-dibromo-3-trimethylpyridine tuaj yeem siv los ua tus neeg sawv cev brominating rau catalyze qee cov organic tshuaj, xws li nucleophilic hloov pauv, oxidation, thiab condensation.
- Organic synthesis: Nws tuaj yeem siv los ua qhov nruab nrab hauv kev sib txuas ntawm cov organic sib txuas, tshwj xeeb tshaj yog rau cov tebchaw uas muaj ketone lossis aldehyde pawg.
- Photosensitive dyes: Nws kuj tuaj yeem siv rau hauv kev npaj ntawm photosensitive dyes.
Txoj kev:
Feem ntau, 2,5-dibromo-3-trimethylpyridine tuaj yeem npaj tau los ntawm cov tshuaj tiv thaiv bromination nrog bromine raws li cov reactant hauv cov tshuaj tiv thaiv ntawm trimethylpyridine. Cov kev mob tshwm sim tuaj yeem txiav txim siab raws li qhov xwm txheej, tab sis yuav tsum tau saib xyuas kom muaj kev nyab xeeb.
Cov ntaub ntawv kev nyab xeeb:
- 2,5-Dibromo-3-trimethylpyridine yog corrosive rau ntawm daim tawv nqaij thiab qhov muag thiab yuav tsum tau zam nyob rau hauv kev sib cuag ncaj qha.
- Hnav cov looj tsom iav, hnab looj tes thiab khaub ncaws tiv thaiv thaum siv.
- Ua haujlwm hauv qhov chaw uas muaj cua zoo thiab tsis txhob nqus nws cov vapors.
- Tsis txhob tiv tauj nrog cov tshuaj oxidizing muaj zog, uas tuaj yeem ua rau muaj kev phom sij txaus ntshai.
- Cov khib nyiab yuav tsum muab pov tseg raws li cov cai hauv zos.
