Qhov sib txawv tseem ceeb ntawm cetyl cawv thiab cetaryl cawv yog tias cetyl cawv yog ib qho tshuaj lom neeg, hos cetearyl cawv yog cov tshuaj sib xyaw ua ke.
Cetyl cawv thiab cetearyl cawv muaj cov tshuaj lom neeg thiab lub cev sib txawv thiab kev siv sib txawv. Cetyl cawv yog hom cawv muaj roj muaj cov tshuaj CH3(CH2)15OH thaum cetearyl cawv yog sib tov ntawm fatty alcohols uas muaj cetyl (carbon-16) compounds thiab stearyl alcohols (carbon-18) compounds.
Cetyl Alcohol yog dab tsi?
Cetyl cawv yog hom cawv muaj roj muaj tshuaj CH3(CH2)15 OH. Cov tshuaj no tshwm sim raws li ib tug waxy dawb khoom los yog nyob rau hauv daim ntawv ntawm flakes ntawm chav tsev kub. Cetyl cawv muaj qhov muag heev, tsw ntxhiab tsw zoo li. Lub npe no los ntawm lo lus "Cetus", uas txhais tau tias "whale oil" hauv Latin. Cov tshuaj no yog thawj zaug cais tawm ntawm whale roj.
Daim duab 01: Cov Qauv Tshuaj ntawm Cetyl Alcohol
Cov tshuaj no yog insoluble hauv dej thiab soluble heev hauv ether, benzene, thiab chloroform. Nws yog soluble hauv acetone thiab me ntsis soluble hauv cawv. Cetyl cawv yog thawj zaug npaj los ntawm cov phev whale roj los ntawm Fabkis chemist Michel Chevreul. Nws rhaub cov spermaceti (cov khoom siv waxy tau los ntawm whale roj) nyob rau hauv lub xub ntiag ntawm caustic potash (potassium hydroxide). Qhov kev kho cua sov no tsim cov flakes ntawm cetyl cawv uas tau tso tseg rau qhov txias. Txawm li cas los xij, txoj kev niaj hnub ntawm cetyl cawv ntau lawm suav nrog kev txo qis ntawm palmitic acid tau los ntawm xibtes roj.
Muaj ntau yam kev siv cetyl cawv, suav nrog nws siv hauv kev lag luam tshuaj pleev ib ce ua cov tshuaj zawv plaub hau, ua ib qho emollient, emulsifier lossis thickening tus neeg sawv cev hauv daim tawv nqaij cream thiab tshuaj pleev ib ce. Tsis tas li ntawd, cov khoom no muaj txiaj ntsig zoo li lub roj nplua nyeem rau cov txiv ntseej thiab bolts. Nws yog ib qho active ingredient nyob rau hauv ib co kua pas dej ua ke npog, thiab. Tsis tas li ntawd, peb tuaj yeem siv cov tshuaj no ua cov khoom siv tsis yog ionic co-surfactant hauv daim ntawv thov emulsion.
Qee tus neeg tuaj yeem nkag siab rau cetyl cawv, feem ntau yog cov neeg mob eczema. Txawm li cas los xij, qhov rhiab heev no tshwm sim los ntawm cov impurities uas muaj nyob rau hauv cetyl cawv. Tab sis qee zaum, cov tshuaj no tau siv hauv qee cov tshuaj thiab.
Cetearyl cawv yog dab tsi?
Cetearyl cawv yog ib qho sib xyaw ntawm fatty alcohols uas muaj cetyl (carbon-16) compounds thiab stearyl alcohols (carbon-18) compounds. Cov tshuaj formula rau qhov sib xyaw ntawm cov tshuaj no tuaj yeem muab tau raws li CH3(CH2)nCH 2OH, qhov twg n tuaj yeem ua tus lej sib txawv feem ntau ntawm 14 txog 16. Lwm lub npe rau cov khoom sib xyaw no suav nrog cetyl-stearyl cawv, ceto-stearyl cawv, thiab cetyl/stearyl cawv.. Cov qauv tshuaj muaj peev xwm muab tau raws li hauv qab no:
Daim duab 02: Cov qauv tshuaj ntawm Cetearyl Alcohol
Qhov kev sib xyaw ntawm cov khoom sib xyaw no yog qhov tseem ceeb raws li emulsion stabilizer, opacifying tus neeg sawv cev, thiab ua npuas dej txhawb nqa surfactant. Nws tseem yog ib qho tseem ceeb raws li aqueous thiab non-aqueous viscosity-nce tus neeg sawv cev. Cetearyl cawv tawm ib qho kev xav ntawm daim tawv nqaij, thiab nws muaj txiaj ntsig zoo hauv dej-hauv-roj emulsions, roj-hauv-dej emulsions thiab hauv cov tshuaj anhydrous. Feem ntau, qhov sib tov no yog siv rau hauv cov plaub hau txias thiab lwm yam khoom siv plaub hau.
Qhov txawv ntawm Cetyl cawv thiab Cetearyl cawv yog dab tsi?
Cetyl cawv yog hom cawv muaj roj muaj tshuaj CH3(CH2)15 OH. Cetearyl cawv yog ib qho kev sib xyaw ntawm cov dej cawv muaj roj uas muaj cov ntsiab lus ntawm cetyl (carbon-16) thiab stearyl alcohols (carbon-18) compounds. Qhov sib txawv tseem ceeb ntawm cetyl cawv thiab cetearyl cawv yog tias cetyl cawv yog ib qho tshuaj lom neeg, hos cetearyl cawv yog cov tshuaj sib xyaw ua ke.
Cov hauv qab no qhia txog qhov sib txawv ntawm cetyl cawv thiab cetearyl cawv hauv daim ntawv teev npe.
Summary – Cetyl Alcohol vs Cetearyl Alcohol
Qhov sib txawv tseem ceeb ntawm cetyl cawv thiab cetaryl cawv yog tias cetyl cawv yog ib qho tshuaj lom neeg, hos cetearyl cawv yog cov tshuaj sib xyaw ua ke. Cetyl cawv muaj txiaj ntsig zoo hauv kev lag luam tshuaj pleev ib ce raws li opacifier hauv cov tshuaj zawv plaub hau, ua ib qho emollient, emulsifier lossis thickening tus neeg sawv cev hauv daim tawv nqaij cream thiab tshuaj pleev. Cetearyl cawv yog ib qho tseem ceeb raws li emulsion stabilizer, opacifying tus neeg sawv cev, thiab ua npuas ncauj boosting surfactant.
