O-nitrophenol
Cov qauv qauv
Lub npe tshuaj: O-nitrophenol
Lwm Lub Npe: 2-nitrophenol, O-hydroxynitrobenzene
Cov roj formula: C6H5NO3
Molecular Luj: 139
CAS Nr .: 88-75-5
PIB: 201-857-5
Tus lej thauj khoom txaus ntshai: UN 1663
Specifications
1. Cov tsos: Lub teeb daj crystal hmoov
2. Melting point: 43-47 ℃
3. Solubility: soluble hauv ethanol, ether, benzene, carbon disulfide, caustic soda thiab dej kub, me ntsis soluble hauv dej txias, volatile nrog chav.
Txoj kev Synthesis
1.Hydrolysis method: o-nitrochlorobenzene yog hydrolyzed thiab acidified los ntawm sodium hydroxide tov.Ntxiv 1850-1950 l ntawm 76-80 g / L sodium hydroxide tov rau hauv lub lauj kaub hydrolysis, thiab tom qab ntawd ntxiv 250 kg ntawm fused o-nitrochlorobenzene.Thaum nws yog rhuab mus rau 140-150 ℃ thiab lub siab yog hais txog 0.45MPa, cia rau 2.5h, ces tsa nws mus rau 153-155 ℃ thiab lub siab yog hais txog 0.53mpa, thiab khaws cia rau 3h.Tom qab cov tshuaj tiv thaiv, nws tau txias rau 60 ℃.Ntxiv 1000L dej thiab 60L concentrated sulfuric acid rau hauv crystallizer ua ntej, tom qab ntawd nias hauv hydrolyzate uas tau hais los saum toj no, thiab maj mam ntxiv sulfuric acid kom txog thaum Congo liab daim ntawv kuaj ntshav hloov ntshav, tom qab ntawd ntxiv dej khov kom txias rau 30 ℃, do, lim, thiab co. tawm ntawm niam cawv nrog centrifuge kom tau 210kg o-nitrophenol nrog cov ntsiab lus ntawm txog 90%.Cov qoob loo yog kwv yees li 90%.Lwm txoj kev npaj yog nitration ntawm phenol rau hauv kev sib xyaw ntawm o-nitrophenol thiab p-nitrophenol, thiab tom qab ntawd distillation ntawm o-nitrophenol nrog dej vapor.Cov nitrification tau ua tiav ntawm 15-23 ℃ thiab qhov kub siab tshaj plaws yuav tsum tsis pub tshaj 25 ℃.
2. Phenol nitration.Phenol yog nitrated los ntawm nitric acid los ua ib tug sib tov ntawm o-nitrophenol thiab p-nitrophenol, thiab ces sib cais los ntawm chav distillation.
Daim ntawv thov
Nws tuaj yeem siv los ua qhov nruab nrab ntawm cov organic synthesis xws li tshuaj, dyestuff, roj hmab pab thiab cov khoom siv photosensitive.Nws tseem tuaj yeem siv los ua tus ntsuas pH monochromatic.
Txoj kev khaws cia
Muab kaw cia rau hauv ib lub warehouse txias thiab ventilated.Khaws kom deb ntawm qhov hluav taws kub thiab qhov cua sov.Nws yuav tsum tau muab cais los ntawm oxidant, reductant, alkali thiab edible tshuaj, thiab sib tov cia yuav tsum tau zam.Kev tawg pov thawj teeb pom kev zoo thiab qhov cua qhov chaw tau txais yuav.Nws yog txwv tsis pub siv cov cuab yeej siv tshuab thiab cov cuab yeej uas yooj yim los tsim cov txim taws.Qhov chaw cia khoom yuav tsum tau nruab nrog cov ntaub ntawv tsim nyog kom muaj cov xau, deb ntawm qhov chaw tshav kub, qhov hluav taws xob thiab cov nplaim hluav taws kub thiab qhov chaw tawg.
Nco ntsoov
Kaw ua haujlwm los muab cov pa hauv zos txaus.Cov neeg ua haujlwm yuav tsum tau kawm tshwj xeeb thiab ua raws li cov txheej txheem ua haujlwm.Nws tau pom zoo tias cov neeg ua haujlwm yuav tsum hnav lub ntsej muag lub ntsej muag lub ntsej muag lub ntsej muag plua plav, tshuaj tiv thaiv tsom iav, tshuaj lom neeg nkag mus ua haujlwm khaub ncaws thiab hnab looj tes roj hmab.Khaws kom deb ntawm qhov hluav taws kub thiab qhov cua sov.Tsis haus luam yeeb hauv chaw ua haujlwm.Siv cov khoom tawg-pov thawj qhov cua thiab cov khoom siv.Tsis txhob muaj plua plav.Tsis txhob sib cuag nrog oxidant, txo tus neeg sawv cev thiab alkali.Thaum nqa, nws yuav tsum tau thauj khoom thiab thauj khoom me me kom tiv thaiv lub pob thiab lub thawv los ntawm kev puas tsuaj.Cov khoom siv tua hluav taws ntawm ntau yam thiab ntau thiab cov khoom siv kho mob thaum muaj xwm ceev yuav tsum tau muab.Cov thawv khoob yuav muaj cov khoom tsis zoo.
