Isopropyl cawv, feem ntau hu ua cawv cawv, yog siv dav siv tshuaj tua kab mob thiab tshuaj ntxuav.Nws muaj nyob rau hauv ob qhov ntau ntau: 70% thiab 91%.Cov lus nug feem ntau tshwm sim hauv lub siab ntawm cov neeg siv: qhov twg kuv yuav tsum yuav, 70% lossis 91% isopropyl cawv?Kab lus no tsom los sib piv thiab txheeb xyuas ob qhov kev xav tau los pab koj txiav txim siab paub.

Yuav pib nrog, cia saib qhov sib txawv ntawm ob qhov concentrations.70% isopropyl cawv muaj 70% isopropanol thiab 30% yog dej.Ib yam li ntawd, 91% isopropyl cawv muaj 91% isopropanol thiab 9% yog dej.

Tam sim no, cia peb piv lawv cov kev siv.Ob qho tib si muaj txiaj ntsig zoo hauv kev tua kab mob thiab kab mob.Txawm li cas los xij, qhov siab dua ntawm 91% isopropyl cawv muaj txiaj ntsig zoo dua los tua cov kab mob tawv thiab cov kab mob uas tiv taus qis dua.Qhov no ua rau nws xaiv zoo dua rau kev siv hauv tsev kho mob thiab chaw kho mob.Ntawm qhov tod tes, 70% isopropyl cawv tsis zoo tab sis tseem muaj txiaj ntsig zoo hauv kev tua cov kab mob thiab cov kab mob feem ntau, ua rau nws yog qhov kev xaiv zoo rau lub hom phiaj tu tsev.

Thaum nws los txog rau kev ruaj ntseg, 91% isopropyl cawv muaj qhov kub siab dua thiab qis dua evaporation piv rau 70%.Qhov no txhais tau hais tias nws tseem siv tau rau lub sijhawm ntev dua, txawm tias raug tshav kub lossis lub teeb.Yog li ntawd, yog tias koj xav tau cov khoom ruaj khov dua, 91% isopropyl cawv yog qhov kev xaiv zoo dua.

Txawm li cas los xij, nws yuav tsum tau muab sau tseg tias ob qho tib si concentrations yog flammable thiab yuav tsum tau saib xyuas.Tsis tas li ntawd, kev siv ntev ntev ntawm cov tshuaj isopropyl cawv tuaj yeem ua rau khaus ntawm daim tawv nqaij thiab qhov muag.Yog li ntawd, nws yog ib qho tseem ceeb uas yuav tsum tau ua raws li cov lus qhia thiab kev ntsuas kev nyab xeeb los ntawm cov chaw tsim khoom.

Hauv kev xaus, kev xaiv ntawm 70% thiab 91% isopropyl cawv nyob ntawm koj cov kev xav tau tshwj xeeb.Yog tias koj xav tau cov khoom lag luam uas muaj txiaj ntsig zoo tiv thaiv kab mob thiab kab mob, tshwj xeeb tshaj yog hauv tsev kho mob lossis chaw kho mob, 91% isopropyl cawv yog qhov kev xaiv zoo dua.Txawm li cas los xij, yog tias koj tab tom nrhiav ib tus neeg saib xyuas kev tu tsev hauv tsev lossis ib yam dab tsi uas tsis zoo tab sis tseem muaj txiaj ntsig zoo rau feem ntau cov kab mob thiab cov kab mob, 70% isopropyl cawv tuaj yeem yog qhov kev xaiv zoo.Thaum kawg, nws yog ib qho tseem ceeb uas yuav tsum ua raws li kev ntsuas kev nyab xeeb los ntawm cov chaw tsim khoom thaum siv cov concentration ntawm isopropyl cawv.