Qhov Tseem Ceeb Qhov Sib Txawv - Denatured vs Undenatured Ethanol
Qhov sib txawv tseem ceeb ntawm denatured thiab undenatured ethanol yog tias denatured ethanol yog ethanol muaj cov additives uas ua rau nws tsis muaj kev nyab xeeb haus thaum undenatured ethanol yog ethanol uas tsis muaj additives los yog denaturants.
Ethanol yog cov organic compound uas muaj C, H thiab O atoms. Cov tshuaj formula ntawm ethanol yog C2H5OH. Muaj ob peb hom ethanol hu ua 95% ethanol, absolute ethanol thiab denatured ethanol. 95% ethanol yog qhov siab tshaj plaws ntawm ethanol uas tuaj yeem tau txais los ntawm distillation. Tsis muaj ethanol muaj nyob ib ncig ntawm 99% ethanol nrog rau qee cov khoom ntxiv xws li benzene. Ob daim ntawv no yog hu ua undenatured forms of ethanol. Denatured ethanol muaj ntau cov additives thiab denaturants.
Denatured Ethanol yog dab tsi?
Denatured ethanol yog ib hom ethanol uas muaj ntau cov additives thiab denaturants uas ua rau nws lom. Denatured ethanol muaj saj tsis zoo thiab ntxhiab tsw uas ua rau nws tsis zoo rau haus. Qee lub sij hawm nws kuj tau ntxiv nrog qee cov dyes kom paub qhov txawv ntawm ethanol los ntawm undenatured ethanol. Cov txheej txheem ntawm denaturing ethanol tsis hloov cov qauv tshuaj ntawm ethanol los yog decompose nws. Ethanol tsuas yog hloov ua kom ethanol undrinkable.
Daim duab 01: Dyed Denatured Ethanol
Cov tshuaj ntxiv uas tuaj yeem pom hauv denatured ethanol yog methanol, isopropanol, pyridine, thiab lwm yam. Cov no tau ntxiv kom tau txais cov tshuaj lom ethanol thiab qee zaum denatonium yog siv los ua ethanol iab. Lub hom phiaj ntawm kev tsim cov denatured ethanol yog los txo cov kev ua si thiab txo cov se ntawm cov dej cawv. Cov tshuaj additive siv rau denaturing ethanol yog 10% methanol. Denatured ethanol yog pheej yig dua li cov ntaub ntawv tsis muaj ethanol.
Dab tsi yog Undenatured Ethanol?
Undenatured ethanol yog daim ntawv ntshiab ntawm ethanol uas tsis muaj lossis tsawg dua ntxiv thiab denaturants. Muaj ob hom ethanol undenatured npe hu ua 95% ethanol thiab absolute ethanol. Cov ntaub ntawv no yog hu ua "ntshiab" cov ntaub ntawv ntawm ethanol.
95% ethanol muaj 9.5:10 piv ntawm ethanol: dej. Qhov no txhais tau tias, 95% ethanol muaj 95 mL ntawm ethanol rau txhua 100mL dej. Daim ntawv ethanol no hu ua azeotrope (qhov piv ntawm ethanol thiab dej yog sib npaug ntawm cov kua thiab vapor xeev).
Daim duab 02: Absolute Ethanol
Tsis muaj ethanol yog 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 cov 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 qhov tseeb ethanol tuaj yeem muaj qee cov tshuaj ntxiv xws li benzene tab sis nyob rau hauv cov lej.
Qhov txawv ntawm Denatured thiab Undenatured Ethanol yog dab tsi?
Denatured vs Undenatured Ethanol |
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| Denatured ethanol yog ib daim ntawv ntawm ethanol uas muaj ntau cov additives thiab denaturants, uas ua rau nws lom. | Undenatured ethanol yog daim ntawv dawb huv ntawm ethanol uas tsis muaj lossis tsawg dua ntxiv thiab cov denaturants. |
| Denatured ethanol muaj ntau cov tshuaj ntxiv thiab cov tshuaj denaturants xws li 10% methanol. | Undenatured ethanol muaj ethanol thiab dej sib tov, tab sis tuaj yeem muaj cov khoom ntxiv xws li benzene. |
| Denatured ethanol yog tsim los txo cov kev ua si ntawm ethanol thiab txo cov se. | Undenatured ethanol haus tau thiab muaj ntau daim ntawv thov kev sim ib yam nkaus. |
| khoom | |
| Denatured ethanol muaj ntxhiab tsw phem, iab saj thiab nws muaj tshuaj lom. | Undenatured ethanol muaj cov yam ntxwv ntawm cawv thiab saj qab zib. |
Summary – Denatured vs Undenatured Ethanol
Qhov txawv ntawm denatured thiab undenatured ethanol yog tias denatured ethanol yog ethanol uas muaj additives uas ua rau nws tsis muaj kev nyab xeeb haus thaum undenatured ethanol yog ethanol uas tsis muaj additives los yog denaturants.
