I-Ophthalic Acid
Ifomula yoLwakhiwo
Igama: Ophthalic acid
Elinye igama: 2-methyl benzoic acid;O-toluene acid
Ifomula yemolekyuli: C8H8O2
Ubunzima bemolekyuli: 136.15
Inkqubo yamanani
Inombolo yeCAS: 118-90-1
I-EINECS: 204-284-9
Ikhowudi yeHS: 29163900
Idatha yePhysical
Imbonakalo: iikristale zeprismatic ezimhlophe ezinokutsha okanye iikristale zenaliti.
Umxholo:≥99.0% (ichromatography elulwelo)
Indawo yokunyibilika: 103°C
Indawo yokubilisa: 258-259°C(lit.)
Ubuninzi: 1.062 g/mL kwi-25°C(lit.)
Isalathiso seRefractive: 1.512
Indawo edanyazayo: 148°C
Ukunyibilika: Inyibilika kancinane emanzini, inyibilika ngokulula kwi-ethanol, i-ether kunye neklorofomu.
Indlela yokuvelisa
1. Ifunyenwe yi-catalytic oxidation ye-o-xylene.Ukusebenzisa i-o-xylene njengento eluhlaza kunye ne-cobalt naphthenate njenge-catalyst, kwiqondo lokushisa kwe-120 ° C kunye noxinzelelo lwe-0.245 MPa, i-o-xylene ngokuqhubekayo ingena kwinqaba ye-oxidation ye-oxidation yomoya, kwaye i-oxidation liquid ingena kwi-Chemicalbook stripping tower. kugxininiso, icrystallization, kunye ne-centrifugation.Fumana imveliso egqityiweyo.Utywala lukamama ludityanisiwe ukuze lubuyise i-o-xylene kunye nenxalenye ye-o-toluic acid, kwaye emva koko ikhuphe intsalela.Isivuno sasingama-74%.Itoni nganye yemveliso itya i-1,300 kg ye-o-xylene (95%).
2. Indlela yokulungiselela kukuba i-o-xylene iqhubeka i-oxidized kunye nomoya phambi kwe-cobalt naphthenate catalyst kwiqondo lokushisa lokusabela kwe-120-125 ° C kunye noxinzelelo lwe-196-392 kPa kwinqaba ye-oxidation ukufumana ukugqiba. imveliso.
Ukusetyenziswa kweMveliso
Usetyenziso lusetyenziswa ikakhulu ekudityanisweni kwezibulali zinambuzane, amayeza kunye nemathiriyeli ekrwada yeekhemikhali.Okwangoku, yeyona nto iphambili ekuvelisweni kwemichiza yokutshabalalisa ukhula.Isebenzisa i-o-methylbenzoic acid yi-pyrrolidone yokungunda, i-fenoxystrobin, i-trifloxystrobin kunye ne-benzyl ye-herbicide. umphuhlisi wefilimu njalo njalo.
