Qhov sib txawv tseem ceeb ntawm methylated spirits thiab isopropyl cawv yog methylated dab muaj ethyl cawv tov nrog methanol thiab lwm yam khoom, hos isopropyl cawv yog ib tug ntshiab cawv kua uas tsis muaj ntxiv Cheebtsam.
Methylated ntsuj plig tshwj xeeb yog tsim los ntawm kev ntxiv cov khoom sib txawv rau ethanol lossis ethyl cawv, xav txog qhov kawg ntawm kev siv cov khoom no. Cov kua no tsis haum rau haus vim nws muaj cov tshuaj lom xws li methanol.
Dab tsi yog Methylated Spirits?
Methylated dab yog cov kua dej cawv uas tau ua tsis haum rau haus los ntawm kev sib ntxiv ntawm li 10 feem pua methanol. Txawm li cas los xij, cov kua dej no feem ntau muaj qee qhov pyridine thiab violet dye. Methylated dab kuj hu ua denatured cawv, lub ntsiab lus, ethyl cawv tov nrog lwm yam tshuaj, nrog rau cov tshuaj xws li methanol, methyl isobutyl ketone, thiab benzene. Cov kua no muaj kuab lom heev vim yog ntxiv cov tshuaj lom xws li methanol; Yog li, cov kua no tsis haum rau tib neeg noj.
Tsis tas li ntawd, methylated dab yog cov tshuaj tsis muaj xim. Peb tuaj yeem xim cov kev daws teeb meem no los ntawm kev ntxiv aniline. Cov xim no yog qhov tseem ceeb kom pom tau yooj yim ntawm tus ntsuj plig methylated. Tom qab ntxiv ntawm aniline, cov kua tshwm nyob rau hauv violet xim. Ntxiv mus, muaj ethyl cawv thiab methanol ua rau methylated ntsuj plig lom, tsis tshua muaj hluav taws kub thiab volatile. Peb cov tawv nqaij tuaj yeem nqus tau cov kua no vim muaj cov tshuaj methanol. Vim li no, peb tsis tuaj yeem siv cov kua no los ua cov tshuaj tsw qab lossis cov khoom da dej. Tsis tas li ntawd, methylated dab muaj ntxhiab tsw phem thiab saj tsis zoo.
Methylated ntsuj plig yog ib qho tseem ceeb xws li cov kuab tshuaj, tshuaj ntxuav tes, tshuaj pleev ib ce, thiab roj rau cua sov thiab teeb pom kev zoo, thiab lwm yam. Muaj cov xim tsis muaj xim ntawm cov kua no uas tseem ceeb hauv kev tua cov kab mob ntawm cov tawv nqaij. Tsis tas li ntawd, peb tuaj yeem siv methylated ntsuj plig los ua cov kuab tshuaj rau cov khoom sib xyaw xws li kua nplaum, siv quav ciab, thiab roj. Raws li cov kua dej no tsis hnov mob nrog iav, peb kuj tuaj yeem siv los ntxuav qhov rais. Txawm hais tias nws tsis zoo rau tib neeg noj, nws tseem yog ib qho tseem ceeb hauv kev tsim cov tshuaj pleev ib ce vim nws cov tshuaj tua kab mob.
Isopropyl cawv yog dab tsi?
Isopropyl cawv lossis 2-propanol yog cawv uas muaj cov mis molecular C3H8O. Nws muaj tib lub qauv molecular li propanol. Nws qhov hnyav molecular yog nyob ib ncig ntawm 60 g mol -1Yog li, peb tuaj yeem hais tias isopropyl cawv yog isomer ntawm propanol. Cov pab pawg hydroxyl ntawm cov molecule no txuas nrog lub thib ob carbon atom hauv cov saw hlau. Qhov kev txuas no ua rau nws muaj cawv thib ob. Li no, nws nkag mus rau tag nrho cov kev cuam tshuam rau ib qho cawv thib ob.
Ntxiv mus, qhov melting point ntawm isopropyl cawv yog -88oC, thiab kub taw tes yog 83oC. Cov kua no yog miscible nrog dej thiab ruaj khov nyob rau hauv ib txwm muaj mob. Isopropyl cawv yog cov kua uas tsis muaj xim, ntshiab, flammable. Ntxiv mus, nws oxidizes nruj heev los tsim acetone. Thaum xav txog cov kev siv ntawm cov cawv no, nws yog ib qho tseem ceeb raws li cov kuab tshuaj thiab siv nyob rau hauv cov tshuaj, cov khoom siv hauv tsev, thiab cov khoom siv tu tus kheej. Peb kuj siv tau los ua lwm yam tshuaj.
Qhov txawv ntawm Methylated Spirits thiab Isopropyl Cawv yog dab tsi?
Methylated dab thiab isopropyl cawv yog cov kua dej cawv. Qhov sib txawv tseem ceeb ntawm methylated spirits thiab isopropyl cawv yog methylated dab muaj ethyl cawv tov nrog methanol thiab lwm yam khoom, whereas isopropyl cawv yog ib tug ntshiab cawv kua uas tsis muaj ntxiv Cheebtsam. Methylated ntsuj plig feem ntau yog violet nyob rau hauv cov xim vim yog ntxiv ntawm aniline thaum isopropyl cawv tsis muaj xim. Yog li, qhov no yog lwm qhov sib txawv ntawm methylated spirits thiab isopropyl cawv.
Cov ntawv qhia hauv qab no qhia ntau qhov sib txawv ntawm cov cawv methylated thiab isopropyl cawv.
Summary – Methylated Spirits vs Isopropyl Cawv
Methylated dab thiab isopropyl cawv yog cov kua dej cawv. Qhov sib txawv tseem ceeb ntawm methylated spirits thiab isopropyl cawv yog methylated dab muaj ethyl cawv tov nrog methanol thiab lwm yam khoom, hos isopropyl cawv yog ib tug ntshiab cawv kua uas tsis muaj ntxiv Cheebtsam.
