Tetrachlorethylene CAS TSIS TAU

Tetrachlorethylene, tseem hu ua perchloroethylene, yog cov organic compound nrog cov tshuaj formula C2Cl4. Nws yog cov kua xim tsis muaj xim, insoluble hauv dej, thiab miscible nrog feem ntau cov kuab tshuaj organic xws li ethanol, ether, chloroform, thiab lwm yam. Nws yog siv los ua cov organic hnyav, cov tshuaj ntxuav qhuav, hnyav rau cov nplaum, degreasing hnyav rau hlau, desiccant, xim. tshem tawm, tshuaj tua kab, roj extractant, thiab organic synthesis.

Siv 1: raws li cov kuab tshuaj organic, tus neeg saib xyuas kom qhuav, tus neeg saib xyuas cov roj extraction, tus neeg sawv cev haus luam yeeb, desulfurizer thiab ntaub xov xov.

Siv 2:Tetrachlorethyleneyog siv dav, feem ntau yog cov organic hnyav, tus neeg saib xyuas kom qhuav, hlau degreasing hnyav, thiab kuj yog ib qho hnyav rau cov tshuaj tua kab mob hauv plab thiab cov khoom siv rau kev tshuaj xyuas chromatographic. Nws tuaj yeem siv los ua cov khoom siv roj ntsha, cov tshuaj tua hluav taws thiab cov pa luam yeeb, thiab tseem tuaj yeem siv los ua cov tshuaj trichlorethylene thiab fluorinated organic compounds.

Siv 3: siv los ua cov khoom siv rau chromatographic tsom xam. Cov kuab tshuaj siv nyob rau hauv cov organic tsom xam raws li rog lossis rog analogues. Kev kub siab ua kua chromatography reagent. Solvent rau kev txiav txim siab spectrophotometric. Organic synthesis.

Siv 4: Nws tuaj yeem siv los tsim tus neeg saib xyuas hlau, thiab yog cov khoom siv tseem ceeb ntawm kev tu thiab kev kho mob rau tsheb thiab maus taus.

Siv 5: Nws tseem hu ua degreaser, yog siv los ntxuav cov tawv nqaij nyoos, tawv thiab pluab degreasing los ntawm cov khoom lag luam plaub. Nws tuaj yeem siv rau kev tu cov ntaub spandex hauv kev lag luam luam ntawv thiab dyeing, thiab ua cov kuab tshuaj rau flexographic phaj ua.

Siv 6: Nws tuaj yeem siv ua tshuaj. Nws muaj qhov ua rau tuag tes tuag taw ntawm tus kab mob hookworm thiab feem ntau siv los kho cov kab mob cab. Txawm li cas los xij, nws tuaj yeem nqus tau los ntawm lub plab zom mov tom qab noj qhov ncauj. Txawm hais tias nws cov tshuaj toxicity qis dua li carbon tetrachloride thiab chloroform, nws tseem muaj qee yam kev mob tshwm sim, uas feem ntau ua rau lub hauv paus paj hlwb puas tsuaj, tshwm sim thawj zaug excitation, tom qab ntawd tuag tes tuag taw, thiab tuaj yeem ua rau lub siab thiab lub raum puas. Kuj tseem muaj cov lus ceeb toom txog kev tsis taus los ntawm cov tshuaj tua kab. Yog li ntawd, nws feem ntau yog siv los ua cov tshuaj veterinary thiab tuaj yeem siv los ntxuav cov kab hluav taws xob.

1. Txoj kev Ethylene Txoj kev no tuaj yeem tsim cov trichlorethylene thiab nws tuaj yeem muab faib ua ob txoj hauv qab no.

A. Direct chlorinated ethylene thiab chlorine react nyob rau hauv 1, 2-dichloroethane tov uas muaj FeCl3 catalyst ntawm 280-450 degree los tsim 1, 2-dichloroethane, thiab ces ntxiv chlorinate rau trichlorethylene thiabtetrachlorethylene. Tom qab distillation, neutralize, ntxuav thiab qhuav nrog NH3 raws li tau txais cov khoom tiav.

B. Oxychlorination generates 1, 2-dichloroethane los ntawm kev ntxiv ethylene thiab chlorine. 1, 2-dichloroethane reacts nrog chlorine thiab oxygen nyob rau hauv cov xwm txheej ntawm 425 degree thiab 138-207kPa siv CuCl2 thiab KCl ua catalysts. Cov khoom yog txias, ntxuav, qhuav thiab distilled kom tau high-purity khoom.

2. Cov txheej txheem hydrocarbon oxidation chlorinates thiab pyrolyses cov hydrocarbon sib tov uas muaj methane, ethane, propane, propylene, thiab lwm yam. ntawm 50-500 degree kom tau cov chlorinated hydrocarbon sib tov, uas tau muab cais ua ntau yam khoom tom qab rectification.

3. Acetylene txoj kev Acetylene thiab chlorine yog rhuab thiab chlorinated los tsim 1,1,2, 2-tetrachloroethane, thiab cov hydrogen chloride raug tshem tawm los ntawm alkali kom tau trichloroethylene, thiab tom qab ntawd pentachloroethane yog tsim los ntawm chlorination, thiab tom qab ntawd cov hydrogen. chloride raug tshem tawm los ntawm alkali kom tautetrachlorethylene. Vim lub siab valence ntawm acetylene, nws tau maj mam hloov los ntawm ethylene txoj kev.

Chemical Properties ntawmtetrachlorethylene: Thaum tsis muaj huab cua, noo noo thiab catalyst, nws tseem ruaj khov thaum rhuab mus rau 500 degree. Tetrachloroethane tuaj yeem tsim tawm thaum lub sijhawm hydrogenation. Hexachloroethane yog tsim thaum chlorination. Nws tuaj yeem ua rau muaj kev cuam tshuam nrog bromine los tsim cov tshuaj monobromotrichloride lossis dibromodichloro compounds. Nyob rau hauv qhov kev txiav txim ntawm catalyst, nws kuj tuaj yeem hnov ​​​​mob nrog hydrogen fluoride. Nyob rau hauv lub xub ntiag ntawm lub teeb, huab cua thiab dej tau ntev, nws maj mam decomposed rau hauv trichloroacetaldehyde thiab phosgene, thiab corrosion ntawm hlau, txhuas, zinc thiab lwm yam hlau yuav inhibited los ntawm kev ntxiv stabilizers. Nyob rau hauv lub xub ntiag ntawm activated carbon, nws yog rhuab mus rau 700 degree thiab decomposed rau hauv hexachlorobenzene thiab hexachloroethane. Nws tuaj yeem oxidized los ntawm cov oxidants muaj zog. Nws tuaj yeem ua mob hnyav nrog barium hmoov, beryllium hmoov, lithium chips, nitrogen tetroxide thiab sodium hydroxide. Nws yog tshuaj lom thiab lub hauv paus paj hlwb inhibitor, uas tuaj yeem ua rau mob taub hau, xeev siab, ntuav thiab txawm tias tsis nco qab. Qhov ncauj LD508850mg/kg hauv nas. Qhov siab tshaj plaws tso cai rau qhov chaw ua haujlwm 100 × 10-6.

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