3 4-Dimethylbenzophenone (CAS # 2571-39-3)
| Risk Codes | 36/37/38 – Khaus qhov muag, ua pa thiab tawv nqaij. |
| Kev nyab xeeb piav qhia | 24/25 - Tsis txhob sib cuag nrog daim tawv nqaij thiab qhov muag. |
Taw qhia
3,4-Dimethylbenzophenone, tseem hu ua ketocarbonate lossis Benzoin. 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:
-Zoo: 3,4-Dimethylbenzophenone yog dawb crystalline khoom.
-Solubility: Nws yog yuav luag insoluble nyob rau hauv dej, thiab muaj siab solubility nyob rau hauv cov organic solvents xws li ethanol thiab dimethylformamide.
-Melting point: Lub melting point ntawm 3,4-dimethylbenzophenone yog hais txog 132-134 degrees Celsius.
-Chemical zog: Nws yog ib qho electrophilic reagent uas tuaj yeem koom nrog ntau yam kev cuam tshuam xws li hydrogen bond tsim, oxidation-txo cov tshuaj tiv thaiv ntawm ketone carbon thiab methyl.
Siv:
- 3,4-Dimethyl benzophenone feem ntau yog siv los ua cov reagent rau cov organic synthesis cov tshuaj tiv thaiv.
-Nws tuaj yeem siv los ua electrophilic reagent los koom nrog cov tshuaj tiv thaiv electrophilic ntxiv, tsim ketone carbonate thiab lwm yam kev cuam tshuam.
-Nws kuj tseem siv tau los ua cov photosensitizer rau lithography, kho lub teeb thiab lwm yam teb.
Txoj Kev Npaj:
Ib txoj hauv kev rau kev npaj ntawm -3,4-dimethyl benzophenone yog cov tshuaj synthesis ntawm barone. Cov kauj ruam ntawm cov tshuaj tiv thaiv yog raws li nram no: Ua ntej, styrene yog reacted nrog tshaj bromine nyob rau hauv lub teeb los yog ultraviolet lub teeb los ua β-bromostyrene. Lub β-bromostyrene ces reacted nrog ib tug hydroxide (xws li, NaOH) los ua 3,4-dimethylbenzophenone.
-Lwm txoj kev npaj yog los ua acetophenone thiab sodium bromide nyob rau hauv alkaline tej yam kev mob los tsim 3,4-dimethyl benzophenone.
Cov ntaub ntawv kev nyab xeeb:
- 3,4-Dimethylbenzophenone tsis muaj tshuaj lom.
-Tsis txhob sib cuag ntawm daim tawv nqaij thiab nqus pa thaum siv.
-Ruyi sab nraud tiv tauj rau ntawm daim tawv nqaij, yuav tsum tam sim ntawd yaug nrog dej kom ntau.
-Yog nqus tau, txav tam sim ntawd mus rau qhov chaw uas muaj cua zoo.
-Nws raug nquahu kom hnav hnab looj tes tiv thaiv tsim nyog thiab cov cuab yeej ua pa thaum ua haujlwm.
-Thaum siv thiab khaws cia, thov ua raws li cov txheej txheem kev nyab xeeb thiab muab tso rau ntawm cov menyuam yaus.
