2-Chloro-4-nitrobenzoic acid CAS 99-60-5 Dawb los yog daj daj koob los yog hmoov siv lead ua. Melting point 142-143 ° C (139-141 ° C). Soluble hauv dej kub, cawv thiab kub benzene.
Ntseeg Tshuaj yog ib tug ua Tuam Tshoj 2-Chloro-4-nitrobenzoic acid CAS 99-60-5 chaw tsim tshuaj paus, tsum thiab exporter. Ua raws li kev ua raws li cov khoom lag luam zoo, kom peb cov 2-Chloro-4-nitrobenzoic acid CAS 99-60-5 tau txaus siab los ntawm ntau tus neeg siv khoom. Shandong Ntseeg
Peb zoo ntawm qhov zoo ntawm cov khoom siv tshuaj lom neeg hauv thaj chaw. Peb cov khoom raug xa tawm mus rau Tebchaws Europe, Tebchaws Meskas, Nyiv, Kaus Lim Qab Teb, Sab Hnub Tuaj Asia thiab lwm lub tebchaws thiab cheeb tsam. Nrog rau kev tshawb fawb thiab thev naus laus zis raws li kev qhia, kev ncaj ncees raws li lub hauv paus, zoo li lub neej, thiab tso siab rau lub tswv yim kev lag luam ntawm kev tsim kho tshiab thiab kev loj hlob, peb cia siab tias yuav tsim kev sib pauv thiab kev koom tes nrog cov neeg siv khoom hauv tsev thiab txawv teb chaws los tsim kev vam meej!
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Khoom npe |
2-Chloro-4-nitrobenzoic acid |
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Formula |
C7H4 NPO 4 |
Molecular Luj |
201.56 |
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CAS Nr. |
99-60-5 : kuv |
Ntau |
500 KG |
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Cov khoom |
Specification |
Cov txiaj ntsig |
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Qhov tshwm sim |
Lub teeb daj rau lub teeb ntsuab |
Ua raws |
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Assay |
99% | 99.28% |
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TEEB MEEM |
Qhov tshwm sim ua raws li tus qauv |
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Melting point 136-140 ° C (lit.)
Kub taw tes 160.5 ° C (roughestimate)
Qhov ceev 1.5719 (roughestimate)
Refractive index 1.6000 (kwv yees)
Cia tej yam kev mob Sealedindry, RoomTemperature
MorphologyCrystallinePowder
Acidity coefficient (pKa) pK1: 1.96 (25 ° C)
ColorLightyellowtolightgreen
Solubility dej 1g / L (20ºC)
Nws yog tau los ntawm chlorination thiab oxidation ntawm p-nitrotoluene. Muab p-nitrotoluene rau hauv lub reactor qhuav, tom qab cua sov thiab melting, ntxiv cov hlau hlau thiab iodine flakes, ntawm 58-62 ⺠, dhau ib qho equimolar chlorine gas, ntxuav nrog dej kub, neutralize nrog sodium carbonate, thiab ncuav rau hauv. dej khov, nplawm kom cais tawm cov muaju, lim kom tshem tawm dej, thiab ziab hauv qhov ntxoov ntxoo kom tau 2-chloro-4-nitrotoluene. Tom qab ntawd ntxiv 25 npaug ntawm 1-2% sodium hydroxide tov rau hauv 2-chloro-4-nitrotoluene, tshav kub kom npau npau, nyob rau hauv lub zog stirring, maj mam ntxiv poov tshuaj permanganate, kom qhov kub thiab txias ntawm 100 ± 1âº, Tom qab ntxiv, txuas ntxiv mus. do, reflux rau 30 feeb, cia txias, thiab tshem tawm manganese dioxide. Cov lim dej tau hloov pauv mus rau pH 1-2 nrog hydrochloric acid, precipitate yog ntxuav nrog dej khov, lim thiab qhuav ntawm 80 ° C kom tau cov khoom. Kev ua haujlwm chlorination tuaj yeem ua tau nyob rau hauv lub xub ntiag ntawm ferric chloride, thiab tseem dhau chlorine ntawm 58-62 ° C. Tag nrho cov txiaj ntsig ntawm chlorination thiab oxidation yog li 70%.
