Qhov sib txawv tseem ceeb ntawm cov cawv cawv thiab cawv cawv yog tias muaj cawv tuaj yeem yog methanol lossis ethanol nrog 95% purity, whereas absolute cawv yog ethanol nrog 99% purity.
Cawv yog cov organic compound uas muaj -OH ua haujlwm pab pawg. Muaj ntau ntau hom cawv uas muaj kev lag luam zoo heev. Absolute alcohol yog lwm hom cawv uas muaj txiaj ntsig ob qho tib si hauv kev lag luam thiab hauv chav kuaj xav tau.
cawv muaj cawv yog dab tsi?
Industrial cawv yog hom cawv uas siv rau hauv kev xav tau kev lag luam. Hom cawv ntau tshaj plaws yog methanol. Feem ntau, txog 12 lab tons ntawm methanol yog tsim nyob rau hauv ib xyoos rau kev xav tau kev lag luam. Lwm qhov kev lag luam cawv feem ntau yog ethanol, uas yog ib qho ntawm cov cawv thaum ntxov uas tau tsim los ua cov cawv cawv.
Daim duab 01: Muaj Dej Cawv
Cov dej cawv hauv kev lag luam tuaj yeem muaj ob hom: daim ntawv ntshiab lossis daim ntawv denatured. Daim ntawv ntshiab tsis muaj ntau yam ntawm impurities, thiab nws muaj txiaj ntsig zoo hauv qee cov ntawv thov kev lag luam uas peb xav tau daim ntawv ntshiab yam tsis muaj kab mob. denatured cawv yog daim ntawv ntawm cawv nrog additives.
Industrial cawv yog siv los ua cov kuab tshuaj rau kev lag luam. Tsis tas li ntawd, cov tshuaj no yog ib qho tseem ceeb rau kev tsim cov tshuaj sib xyaw xws li acetaldehyde, ethyl acetate, acetic acid, ethylene dibromide, glycols, thiab ethyl chloride.
Absolute Alcohol yog dab tsi?
Absolute cawv yog ib hom ethanol uas muaj tsawg dua 1% dej los ntawm qhov hnyav. Hauv lwm lo lus, cov kua dej no muaj tsawg kawg yog 99% cawv ntshiab los ntawm qhov hnyav. Nws yog ib lub npe nrov rau ethanol. Nws tshwm sim raws li cov kua tsis muaj xim uas muaj cov tshuaj formula C2H5OH. Peb tuaj yeem pom hom cawv no hauv cov dej haus.
Daim duab 02: Absolute Alcohol bottles
Absolute ethanol yog ib daim ntawv ntshiab dua li lwm hom ethanol. Qhov no yog vim nws muaj 99-100% ethanol. Daim ntawv no ntawm ethanol yog qhov tseem ceeb heev hauv kev sim cov txheej txheem uas muaj kev nkag siab zoo rau qhov muaj dej. Yuav kom tau txais ethanol kiag li ntawm distillation, additives yog siv thaum lub sij hawm distillation txheej txheem. Cov additives no tuaj yeem rhuav tshem lub xeev azeotrope ntawm ethanol thiab tso cai rau ethanol ntau dua. Yog li, cov ethanol tsis muaj peev xwm muaj qee cov khoom ntxiv xws li benzene tab sis nyob rau hauv cov lej.
Dab tsi yog qhov txawv ntawm Industrial Cawv thiab Absolute Alcohol?
Cawv yog cov organic compound uas muaj -OH ua haujlwm pab pawg. Muaj ntau ntau hom cawv uas muaj kev lag luam zoo heev. Kev haus cawv yog hom cawv uas siv rau hauv kev xav tau kev lag luam, thaum haus cawv tiag tiag yog ib hom ethanol uas muaj tsawg dua 1% ntawm dej los ntawm qhov hnyav. Qhov sib txawv tseem ceeb ntawm cov cawv cawv thiab cawv cawv yog tias muaj cawv tuaj yeem yog methanol lossis ethanol nrog 95% purity, whereas absolute cawv yog ethanol nrog 99% purity.
Cov lus hauv qab no qhia txog qhov sib txawv ntawm cov cawv cawv thiab cawv.
Summary – Industrial Cawv vs Absolute Alcohol
Cawv yog cov organic compound uas muaj -OH ua haujlwm pab pawg. Muaj ntau ntau hom cawv uas muaj kev lag luam zoo heev. Hauv kev luv luv, qhov sib txawv tseem ceeb ntawm cov cawv cawv thiab cawv cawv yog tias muaj cawv tuaj yeem yog methanol lossis ethanol nrog 95% purity, whereas absolute cawv yog ethanol nrog 99% purity.
