4-Methyl-2-nitrophenol (CAS # 119-33-5)
| Hazard Cov Cim | Xi-Nyob |
| Risk Codes | R36/37/38 - Kab mob rau qhov muag, ua pa thiab tawv nqaij. |
| Kev nyab xeeb piav qhia | 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 | TIAB SA 2446 |
Taw qhia
4-Methyl-2-nitrophenol yog cov organic compound nrog cov tshuaj formula C7H7NO3. 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:
4-methyl -2-nitrophenol yog ib yam khoom, dawb mus rau lub teeb daj siv lead ua, nws muaj ib qho tshwj xeeb pungent tsw ntawm chav tsev kub. Nws yuav luag insoluble hauv dej, tab sis soluble nyob rau hauv cov organic solvents xws li ethanol thiab ether.
Siv:
4-methyl -2-nitrophenol yog dav siv hauv cov organic synthesis. Vim hais tias nws muaj ob yam active substituents, hydroxyl thiab nitro, nws yuav siv tau raws li ib tug antibacterial neeg sawv cev, preservative thiab peroxide stabilizer. Tsis tas li ntawd, nws kuj tseem siv rau hauv kev tsim cov dyes, pigments thiab fluorescent dyes.
Txoj Kev Npaj:
4-methyl -2-nitrophenol tuaj yeem tsim los ntawm nitration ntawm toluene. Ua ntej, toluene yog tov nrog concentrated sulfuric acid nyob rau hauv lub xub ntiag ntawm nitric acid thiab reacted ntawm ib tug tsim nyog kub rau ib tug tej lub sij hawm ntawm lub sij hawm kom tau ib yam khoom, uas yog ces raug mus rau tom qab cov kauj ruam ntawm crystallization, pom thiab ziab kom txog thaum kawg tau 4- methyl-2-nitrophenol.
Cov ntaub ntawv kev nyab xeeb:
4-Methyl-2-nitrophenol yog cov tshuaj lom neeg uas ua rau khaus thiab corrosive. Kev raug rau nws tuaj yeem ua rau tawv nqaij khaus, khaus qhov muag thiab ua pa ua pa. Yog li ntawd, thaum siv los yog tuav nws, koj yuav tsum hnav cov khoom tiv thaiv tsim nyog, xws li hnab looj tes, tsom iav thiab cov khoom tiv thaiv ua pa kom tsis txhob muaj kev sib cuag ncaj qha thiab nqus tau pa. Tsis tas li ntawd, nws yog ib qho khoom siv hluav taws xob thiab yuav tsum tau khaws cia kom deb ntawm qhov hluav taws kub thiab cua sov. Thaum khaws cia thiab thauj mus los, yuav tsum tau saib xyuas kom tsis txhob sib xyaw nrog oxidants thiab combustibles. Raws li kev kho tsis raug, nws yuav ua rau muaj kuab paug thiab ua rau muaj kev puas tsuaj rau ib puag ncig. Yog li ntawd, yuav tsum tau ua raws li cov txheej txheem kev nyab xeeb kom ntseeg tau tias siv thiab pov tseg cov khoom sib xyaw kom raug.
