2-Bromo-4-methyl-3-nitropyridine (CAS # 23056-45-3)
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. |
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. S37/39 - Hnav cov hnab looj tes tsim nyog thiab tiv thaiv qhov muag / ntsej muag |
Hazard Class | IRRITANT |
Taw qhia
Nws yog ib qho organic compound nrog cov tshuaj formula C, H, BrN, O. Cov hauv qab no yog ib qho kev qhia txog qee yam ntawm nws cov khoom, kev siv, txoj kev thiab cov ntaub ntawv kev nyab xeeb:
Xwm:
-Cov tsos mob: tsis muaj xim rau daj crystal lossis hmoov daim ntawv.
-Solubility: Nws tuaj yeem yaj hauv cov kuab tshuaj organic, xws li ethanol, dimethyl sulfoxide thiab chloroform, tab sis insoluble hauv dej.
Siv:
-Synthetic chemistry: Nws yog ib qho kev siv ligand, uas tuaj yeem tsim cov txheej txheem nrog cov hlau hloov pauv thiab siv los ua catalysts hauv cov organic synthesis.
-Pesticide manufacturing: Nws kuj tseem siv tau los ua ib qho nruab nrab rau qee yam tshuaj tua kab.
Txoj kev:
Txoj kev npaj yuav ua tau los ntawm cov kauj ruam hauv qab no:
1. Ua ntej, lutidine yog yaj hauv dimethyl sulfoxide.
2. Thaum tsis tshua muaj kub, maj mam ntxiv nitric acid thaum khaws cov tshuaj tiv thaiv kub hauv qab 0 degrees Celsius.
3. Maj mam ntxiv bromoethane Dropwise rau hauv cov tshuaj tiv thaiv kab mob, txuas ntxiv kom tsis txhob muaj qhov kub thiab txias, thiab do kom txog thaum kawg ntawm cov tshuaj tiv thaiv.
4. Thaum kawg, cov tshuaj tiv thaiv sib xyaw yog lim, ntxuav, crystallized thiab qhuav kom tau txais calcium.
Cov ntaub ntawv kev nyab xeeb:
Nws yuav ua rau muaj kev phom sij rau tib neeg lub cev thiab ib puag ncig, yog li koj yuav tsum tau xyuam xim rau cov teeb meem kev noj qab haus huv thiab kev nyab xeeb thaum siv thiab tuav. Nov yog qee qhov kev xav txog kev nyab xeeb:
- Hnav cov khoom tiv thaiv tsim nyog xws li hnab looj tes, tsom iav thiab khaub ncaws tiv thaiv thaum siv.
-Tsis txhob nqus nws cov plua plav thiab tiv nrog daim tawv nqaij. Nyob rau hauv rooj plaub ntawm kev sib chwv tsis sib haum, tam sim ntawd yaug qhov chaw cuam tshuam nrog dej txaus thiab nrhiav kev pab kho mob.
- Khaws kom deb ntawm qhov hluav taws kub thiab hluav taws thaum khaws cia thiab tuav, thiab tswj qhov cua kom zoo.
-Txoj kev sib cuag ncaj qha nrog oxidants, acids, alkalis thiab lwm yam khoom kom tsis txhob muaj kev phom sij txaus ntshai.
Thov nco ntsoov tias cov ntaub ntawv muab los ntawm no tsuas yog siv rau kev siv xwb. Thaum siv thiab tuav cov tshuaj hauv kev xyaum, nco ntsoov xa mus rau cov ntaub ntawv tseem ceeb thiab kev tswj hwm kev nyab xeeb, thiab ua raws li cov lus qhia tshaj lij.