3-Chloro-4-fluorobenzyl bromide (CAS # 192702-01-5)
Risk thiab Safety
| Risk Codes | R34 - Ua rau kub hnyiab R36/37/38 - Kab mob rau qhov muag, 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. S36/37/39 - Hnav cov khaub ncaws tiv thaiv tsim nyog, hnab looj tes thiab tiv thaiv qhov muag / ntsej muag. S45 - Thaum muaj xwm txheej lossis yog tias koj tsis xis nyob, nrhiav kev kho mob tam sim ntawd (qhia daim ntawv lo thaum twg ua tau.) |
| UN IDs | ib 3265 |
| HS Code | 2 903990 |
| Kev Ceeb Toom | Corrosive / Lachrymatory |
| Hazard Class | 8 |
| Packing Group | III |
3-Chloro-4-fluorobenzyl bromide (CAS # 192702-01-5) Taw qhia
3-Chloro-4-fluorobenzyl bromide yog cov khoom uas muaj ntxhiab tsw zoo ib yam li bromobenzene. Nws muaj qhov melting point ntawm 38-39 ° C. Thiab qhov kub ntawm qhov kub ntawm 210-212 ° C. Nyob rau hauv chav tsev kub, nws yuav luag insoluble nyob rau hauv dej, tab sis soluble nyob rau hauv feem ntau cov organic solvents.
Siv:
3-Chloro-4-fluorobenzyl bromide muaj ntau yam kev siv hauv cov organic synthesis. Nws yog ib qho tseem ceeb nruab nrab rau kev npaj ntawm lwm cov organic tebchaw, xws li tshuaj, dyes thiab tshuaj tua kab. Nws kuj yog siv rau hauv kev npaj cov nplaim hluav taws, cov ntaub ntawv photosensitive thiab resin modifiers.
Txoj kev:
3-Chloro-4-fluorobenzyl bromide feem ntau tau txais los ntawm reacting bromobenzene nrog tert-butyl magnesium bromide. Ua ntej, tert-butylmagnesium bromide yog reacted nrog bromobenzene ntawm qhov kub thiab txias kom tau tert-butylphenylcarbinol. Tom qab ntawd, los ntawm chlorination thiab fluorination, pawg carbinol tuaj yeem hloov mus rau chlorine thiab fluorine, thiab 3-Chloro-4-fluorobenzyl bromide yog tsim. Thaum kawg, cov khoom lag luam tuaj yeem tau txais los ntawm kev lim dej los ntawm distillation.
Cov ntaub ntawv kev nyab xeeb:
Siv 3-Chloro-4-fluorobenzyl bromide nrog rau kev mob toxicity thiab irritation. Nws tuaj yeem ua rau khaus khaus ntawm cov hlab ntsws, tawv nqaij thiab qhov muag. Tsis txhob tiv tauj nrog daim tawv nqaij, qhov muag thiab ua pa thaum ua haujlwm. Hnav cov cuab yeej tiv thaiv tsim nyog, xws li hnab looj tes, tsom iav thiab daim npog ntsej muag. Tsis tas li ntawd, nws yuav tsum tau muab khaws cia rau hauv qhov chaw muaj cua zoo thiab tsis txhob sib cuag nrog cov khoom xws li cov oxidants muaj zog. Yog nqos los yog nqus tau, nrhiav kev kho mob tam sim ntawd. Thov nyeem cov lus qhia txog kev nyab xeeb ntawm cov khoom ua ntej siv.
