Qhov ntom ntawm dichloromethane: Ib qho tob tob saib ntawm lub cev tseem ceeb no
Methylene chloride (cov tshuaj formula: CH₂Cl₂), tseem hu ua chloromethane, yog cov kua tsis muaj xim, tsw qab zib uas tau siv dav hauv kev lag luam tshuaj, tshwj xeeb yog cov kuab tshuaj. Kev nkag siab txog cov cuab yeej ntawm lub cev ntawm qhov ntom ntom ntawm methylene chloride yog qhov tseem ceeb rau nws daim ntawv thov hauv kev lag luam. Hauv tsab xov xwm no, peb yuav tshawb xyuas cov khoom ntom ntom ntawm methylene chloride kom ntxaws thiab cov cuab yeej no cuam tshuam li cas rau nws siv hauv cov txheej txheem tshuaj.
Dab tsi yog qhov ceev ntawm methylene chloride?
Qhov ntom yog qhov sib piv ntawm cov khoom hnyav rau nws qhov ntim thiab yog qhov tseem ceeb ntawm lub cev tsis zoo rau kev ua tus yam ntxwv ntawm cov khoom. Qhov ceev ntawm methylene chloride yog kwv yees li 1.33 g / cm³ (ntawm 20 ° C). Qhov ntsuas qhov ceev no qhia tau tias methylene chloride yog me ntsis denser dua dej (1 g / cm³) ntawm qhov kub thiab txias, txhais tau tias nws hnyav dua li dej. Cov cuab yeej ntom ntom no tso cai rau methylene chloride tuaj yeem ua rau pom tus cwj pwm tshwj xeeb hauv ntau daim ntawv thov, piv txwv li hauv cov txheej txheem ua kua-kua sib cais, qhov feem ntau nws nyob hauv qab txheej dej.
Cov nyhuv ntawm qhov kub ntawm qhov ntom ntawm methylene chloride
Qhov ceev ntawm methylene chloride sib txawv nrog qhov kub thiab txias. Feem ntau, qhov ceev ntawm methylene chloride txo qis thaum kub nce. Qhov no yog vim qhov sib txawv ntawm cov molecules ntau dua vim qhov kub thiab txias, uas txo cov ntsiab lus ntawm ib chav tsev ntim. Piv txwv li, ntawm qhov kub siab dua, qhov ceev ntawm methylene chloride yuav poob qis dua 1.30 g / cm³. Qhov kev hloov pauv no yog qhov tseem ceeb rau cov txheej txheem tshuaj lom neeg uas yuav tsum muaj kev tswj xyuas cov khoom hnyav, xws li hauv kev rho tawm lossis kev sib cais, qhov kev hloov me me ntawm qhov ntom yuav cuam tshuam rau cov txiaj ntsig ntawm kev ua haujlwm. Yog li, qhov ntsuas kub ntawm qhov ntom ntom yuav tsum tau ua tib zoo txiav txim siab hauv kev tsim cov txheej txheem cuam tshuam nrog methylene chloride.
Kev cuam tshuam ntawm dichloromethane ntom ntom ntawm nws daim ntawv thov
Dichloromethane ntom ntom muaj qhov cuam tshuam ncaj qha rau nws cov kev siv ntau hauv kev lag luam. Vim nws qhov siab ceev, dichloromethane yog ib qho hnyav hnyav hauv cov kua-kua extraction thiab tshwj xeeb tshaj yog haum rau kev sib cais ntawm cov organic tebchaw uas yog immiscible nrog dej. Nws kuj yog ib qho hnyav hnyav hauv kev tsim cov xim, tshuaj, thiab cov khoom siv tshuaj. Qhov ntom ntawm methylene chloride ua rau nws pom cov khoom tshwj xeeb ntawm cov roj solubility thiab vapor siab, thiab nws kuj tau siv dav hauv cov neeg ua npuas dej, cov xim strippers thiab lwm yam kev siv.
Cov ntsiab lus
Lub cev muaj zog ntawm dichloromethane ntom ntom ua lub luag haujlwm tseem ceeb hauv kev lag luam tshuaj. Kev nkag siab thiab kev paub txog qhov ntsuas no tsis tsuas yog pab txhim kho kev lag luam kev lag luam xwb tab sis kuj ua kom ntseeg tau tias cov txiaj ntsig zoo tshaj plaws ntawm cov txheej txheem ua tiav ntawm qhov sib txawv ntawm qhov kub thiab txias. Los ntawm kev tshuaj xyuas hauv daim ntawv no, nws ntseeg tau tias tus nyeem ntawv yuav muaj peev xwm nkag siab tob txog qhov ntom ntom ntawm dichloromethane thiab nws qhov tseem ceeb hauv cov ntawv thov kev lag luam.