Qhov kub ntau ntawm cov tshuaj chlorinated hnyav yog hais txog qhov ntsuas kub ntawm lub sijhawm ntsuas raws li cov txheej txheem siab-los ntawm qhov pib ntawm boiling mus rau qhov chaw uas distillation tseem ceeb ua tiav. Nws yog ib qho tseem ceeb qhia rau kev ntsuam xyuas cov khoom muaj pes tsawg leeg thiab volatility. Cov ntsiab lus boiling sib txawv ntawm cov chlorinated cov kuab tshuaj sib txawv, feem ntau yog vim qhov sib txawv ntawm cov qauv molecular, tus naj npawb ntawm cov tshuaj chlorine atoms, thiab cov rog intermolecular. Piv txwv li, qhov kub ntawm dichloromethane yog kwv yees li 39.6 degree, chloroform yog li 61.2 degree, trichlorethylene nyob ib ncig ntawm 87 degree, thiab tetrachlorethylene yog kwv yees li 121 degree. Txawm hais tias ib qho, cov khoom ntshiab feem ntau yog tus cwj pwm los ntawm qhov tshwj xeeb kub kub, cov kuab tshuaj sib xyaw uas muaj ntau yam zoo dua piav qhia los ntawm nws qhov kub kub.
Hauv kev tsim khoom lag luam, qhov kub kub cuam tshuam qhov evaporation tus nqi, distillation efficiency, ziab lub sij hawm, thiab rov qab cov xwm txheej ntawm chlorinated cov kuab tshuaj. Cov kuab tshuaj nrog qhov qis qis feem ntau evaporate yooj yim dua; thaum qhov no yog qhov zoo rau cov txheej txheem uas yuav tsum tau evaporation sai, nws kuj tseem tuaj yeem ua rau cov kuab tshuaj ntau dua thiab ua rau muaj kev pheej hmoo ntawm vapor. Hloov pauv, cov kuab tshuaj uas muaj ntau dua boiling ntau evaporate qeeb qeeb, muab cov yam ntxwv ua haujlwm tshwj xeeb rau kev tu, tshem tawm, thiab kev siv tshuaj lom neeg. Rau cov kuab tshuaj sib tov, qhov kev hloov pauv tseem ceeb hauv qhov kub kub yuav qhia tau tias muaj kev hloov pauv hauv cov khoom muaj pes tsawg leeg lossis qib impurity; yog li ntawd, qhov kub kub tuaj yeem ua haujlwm tau zoo siv metric rau ob qho tib si kev tshuaj xyuas thiab kev tswj kom zoo.
Kev txiav txim siab qhov kub ntawm cov tshuaj chlorinated hnyav yuav tsum tau ua raws li cov kev xav tau tshwj xeeb thiab kev sim, vim tias cov txiaj ntsig tuaj yeem cuam tshuam los ntawm cov yam ntxwv xws li cov qauv sib xyaw, cov qauv kev sim xaiv, thiab lub siab ambient. Hauv kev xyaum, cov neeg siv yuav tsum txheeb xyuas cov ntsiab lus ntawm qhov kub thiab txias ntawm qhov kub thiab txias rau cov khoom siv Cov Ntaub Ntawv Cov Ntaub Ntawv (TDS) thiab xav txog lwm yam tsis-xws li purity, ntom, thiab vapor siab-los ua ib qho kev ntsuam xyuas. Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias qhov kub ntawm qhov kub tsis yog qhov sib txuam nrog "kev ua haujlwm kub zoo." Qee cov tshuaj chlorinated cov kuab tshuaj yuav tso tawm cov vapors txaus ntshai thaum cua sov, thiab qee hom tuaj yeem decompose nyob rau hauv tej yam kev mob. Yog li ntawd, tag nrho cov txheej txheem distillation, cua sov, thiab hnyav rov qab yuav tsum tau ua raws li nruj raws li cov ntaub ntawv Safety Data Sheet (SDS) thiab tsim cov txheej txheem kev khiav hauj lwm.