-12.9 Degree
Lub taw tes khov ntawm ethylene glycol yog -12.9 degree. Cov hauv qab no yog cov ntsiab lus tseem ceeb thiab cov ntaub ntawv ntxiv:
Ua kom khov rau ethylene glycol
Qhov khov taw tes ntawm ethylene glycolol nyob rau hauv tus qauv kev mob yog -12.9 degree. Cov ntaub ntawv no los ntawm cov ntaub ntawv encyclopedias, kev soj ntsuam cov ntaub ntawv thiab tshuaj cov ntaub ntawv tshuaj ntxiv, thiab muaj kev sib xws.
Nws qhov taw tes khov khov kom cuam tshuam txog nws cov qauv molecular: Ethylene Glycolular Glycolular muaj ob pawg hydroxyl ({} â). Txawm hais tias nws tuaj yeem tsim cov hydrogen bonds, nws cov molecular ntim, nws yog qhov nyuaj rau kev npaj kaw kaw ntom nti.
Ua kom muaj qhov taw tes ntawm ethylene glycol aqej aqueous daws
Tom qab ethylene glycol yog tov nrog dej, qhov taw tes khov yog txo ntxiv. Piv txwv li:
20% concentration: -8.9 degree
60% concentration: -51 degree
68% concentration: -68℃(qhov tseeb taw tes nce tom qab tshaj qhov sib piv no).
Cov xeeb ceem no ua rau nws dav siv raws li cov tshuaj tiv thaiv, tshwj xeeb tshaj yog hauv cov tshuab ua kom txias.
Kev sib piv nrog lwm cov tshuaj yeeb dej caw
Propylene glycol, uas yog ib qho uas yog ib qho tseem yog ib qho chaw, muaj lub ntsiab lus khov ntawm -59.5 degree, uas yog qis dua tab sis kim dua.
Ntsiab lus: Qhov ua kom muaj qhov taw tes khov ntawm ethylene glycol yog ho cuam tshuam los ntawm purity thiab concentration. Nws yog -12.9℃hauv lub xeev ntshiab. Nws tuaj yeem hloov mus rau qhov chaw kub qis dua tom qab tau npaj ua cov kua a aqueous.
