Qhov txawv ntawm cetyl cawv thiab stearyl cawv yog tias cetyl cawv muaj 16 carbon atoms, whereas stearyl cawv muaj 18 carbon atoms.
Lub npe cetyl cawv yog los ntawm nws thawj qhov chaw: phev whale roj. Lo lus Latin rau whale roj yog Cetus. Txawm li cas los xij, niaj hnub tsim khoom siv cov roj palmitic ua qhov chaw ntawm cetyl cawv. Stearyl cawv, ntawm qhov tod tes, yog tsim los ntawm stearic acid. Ob leeg yog haus cawv.
Cetyl Alcohol yog dab tsi?
Cetyl cawv yog cov cawv muaj roj uas muaj 16 carbon atoms ib molecule. Lub npe IUPAC ntawm cov tshuaj no yog hexadecan-1-ol. Cov tshuaj formula ntawm no compound yog CH3(CH2)15OH. Nyob rau hauv ib txwm chav tsev kub, qhov compound no tshwm sim raws li ib tug waxy dawb khoom. Qee zaum nws tshwm sim li flakes. Tsis tas li ntawd, qhov sib xyaw no muaj ntxhiab tsw heev.
Daim duab 01: Cov Qauv Tshuaj ntawm Cetyl Alcohol
Lub npe ntawm cov tshuaj no yog muab los ntawm cov roj whale vim lub npe Latin rau whale yog Cetus. Nws yog vim hais tias thawj qhov ntawm cov cawv no yog whale roj. Kev tsim khoom niaj hnub no suav nrog kev txo qis ntawm palmitic acid. Ntawm no, palmitic acid los ntawm xibtes roj.
Txawm hais txog kev siv, cetyl cawv yog ib qho tseem ceeb ntawm cov tshuaj zawv plaub hau, ua cov khoom siv hauv kev lag luam tshuaj pleev ib ce, ua emulsifier, ua cov thickening agent, thiab lwm yam.
Stearyl cawv yog dab tsi?
Stearyl cawv yog cov cawv muaj roj muaj 18 carbon atoms ib molecule. Lub npe stearyl yog muab los ntawm nws qhov chaw, stearic acid. Cov tshuaj formula ntawm no compound yuav muab tau raws li CH3 (CH2) 16CH2OH. Tsis tas li ntawd, qhov sib xyaw no muaj xws li dawb granules los yog flakes. Ntxiv mus, cov compound no yog dej-insoluble.
Daim duab 02: Cov qauv tshuaj ntawm Stearyl cawv
Thaum xav txog kev siv cov tshuaj no, nws yog ib qho tseem ceeb ua cov khoom xyaw hauv cov roj nplua nyeem, resins, naj hoom, thiab lwm yam. Peb kuj tuaj yeem siv nws ua emulsifier thiab thickening tus neeg sawv cev hauv kev tsim cov tshuaj pleev. Catalytic hydrogenation ntawm stearic acid yog cov txheej txheem uas peb siv rau cov txheej txheem ntawm stearyl cawv. Txij li thaum peb siv stearic acid rau qhov no, stearyl cawv muaj toxicity tsawg.
Qhov txawv ntawm Cetyl cawv thiab Stearyl cawv yog dab tsi?
Ob leeg cetyl cawv thiab Stearyl cawv yog cov cawv muaj roj. Qhov sib txawv tseem ceeb ntawm cetyl cawv thiab stearyl cawv yog tias cetyl cawv muaj 16 carbon atoms, tab sis stearyl cawv muaj 18 carbon atoms. Cov tshuaj formula ntawm cetyl cawv yog CH3 (CH2) 15OH thaum cov tshuaj formula ntawm stearyl cawv tuaj yeem muab tau li CH3 (CH2) 16CH2OH. Lub npe IUPAC ntawm cetyl cawv yog hexadecane-1-ol thaum rau stearyl cawv nws yog octadecan-1-ol.
Feem ntau, cetyl cawv muaj xws li cov khoom siv dawb dawb thaum stearyl cawv muaj xws li dawb granules lossis flakes. Yog li, peb tuaj yeem xav txog qhov zoo li qhov sib txawv ntxiv ntawm cetyl cawv thiab stearyl cawv. Tsis tas li ntawd, lub npe ntawm cetyl cawv yog muab los ntawm nws qhov chaw thaum ntxov, whale roj. Lub npe ntawm stearyl cawv yog muab los ntawm nws qhov chaw, stearic acid.
Thaum xav txog cov txheej txheem tsim khoom, kev tsim cov cawv cetyl cuam tshuam nrog kev txo qis ntawm palmitic acid thaum tsim khoom, stearyl cawv cuam tshuam nrog catalytic hydrogenation ntawm stearic acid. Ntxiv mus, cetyl cawv yog pab tau nyob rau hauv kev lag luam raws li ib tug opacifier rau tshuaj zawv plaub hau, raws li ib tug muaj nyob rau hauv lub cosmetic kev lag luam, raws li ib tug emulsifier, raws li ib tug thickening neeg sawv cev, thiab lwm yam Stearyl cawv, ntawm qhov tod tes, yog ib qho tseem ceeb raws li ib tug muaj nyob rau hauv lubricants, resins, perfumes, thiab lwm yam. Tsis tas li ntawd, peb tuaj yeem siv nws ua emulsifier thiab cov neeg ua kom tuab hauv kev tsim cov tshuaj pleev.
Hauv qab no yog daim ntawv qhia qhia qhov txawv ntawm cetyl cawv thiab stearyl cawv.
Summary – Cetyl Alcohol vs Stearyl Alcohol
Ob leeg cetyl cawv thiab Stearyl cawv yog cov cawv muaj roj. Qhov sib txawv tseem ceeb ntawm cetyl cawv thiab stearyl cawv yog tias cetyl cawv muaj 16 carbon atoms, thaum stearyl cawv muaj 18 carbon atoms. Yog li, IUPAC lub npe ntawm cetyl cawv yog hexadecan-1-ol. Lub npe IUPAC ntawm stearyl cawv yog octadecan-1-ol.
