Qhov sib txawv tseem ceeb ntawm cetyl cawv thiab cetostearyl cawv yog tias cetyl cawv yog ib qho tshuaj lom neeg, hos cetostearyl cawv yog cov tshuaj sib xyaw ua ke.
Cetyl cawv yog hom cawv muaj roj muaj tshuaj CH3(CH2)15 OH. Cetostearyl cawv, ntawm qhov tod tes, yog qhov sib xyaw ntawm cov cawv muaj roj uas muaj cetyl (carbon-16) cov tshuaj thiab cov tshuaj stearyl cawv (carbon-18) cov tshuaj.
Cetyl Alcohol yog dab tsi?
Cetyl cawv yog hom cawv muaj roj muaj tshuaj CH3(CH2)15 OH. Nws tshwm sim raws li waxy dawb khoom los yog nyob rau hauv daim ntawv ntawm flakes ntawm chav tsev kub. Cov tshuaj no muaj ib tug heev faint, waxy tsw thiab. Lub npe ntawm cov tshuaj no los ntawm lo lus "Cetus," uas txhais tau tias "whale roj" hauv Latin. Cetyl cawv yog thawj zaug cais tawm ntawm whale roj. 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.
Daim duab 01: Cetyl Alcohol
Cov tshuaj no yog insoluble hauv dej thiab soluble heev hauv ether, benzene, thiab chloroform. Nws kuj yog soluble hauv acetone thiab me ntsis soluble hauv cawv.
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, los yog thickening agent nyob rau hauv daim tawv nqaij cream thiab lotions. 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.
Cetostearyl cawv yog dab tsi?
Cetostearyl cawv lossis cetearyl cawv yog sib xyaw ntawm cov cawv fatty cawv 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)nCH2OH, 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.
Daim duab 02: Cetostearyl 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-boosting surfactant. Nws tseem yog ib qho tseem ceeb raws li ib tug aqueous thiab non-aqueous viscosity-nce tus neeg sawv cev. Cetearyl cawv tawm ib qho kev xav ntawm daim tawv nqaij thiab muaj txiaj ntsig zoo hauv dej-hauv-roj emulsions, roj-hauv-dej emulsions, thiab cov tshuaj tsis muaj dej. 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 Cetostearyl cawv yog dab tsi?
Cetyl cawv tuaj yeem piav qhia tias yog hom cawv muaj roj muaj cov tshuaj formula CH3(CH2)15OH. Cetostearyl cawv lossis cetearyl cawv tuaj yeem piav qhia tias yog kev sib xyaw ntawm cov roj cawv uas muaj cetyl (carbon-16) cov tshuaj thiab cov tshuaj stearyl alcohols (carbon-18). Qhov sib txawv tseem ceeb ntawm cetyl cawv thiab cetostearyl cawv yog tias cetyl cawv yog ib qho tshuaj lom neeg, hos cetostearyl cawv yog cov tshuaj sib xyaw ua ke.
Cov ntawv qhia hauv qab no nthuav tawm qhov sib txawv ntawm cetyl cawv thiab cetostearyl cawv hauv daim ntawv tabular rau ib sab ntawm kev sib piv.
Summary – Cetyl Alcohol vs Cetostearyl Alcohol
Cetyl cawv thiab Cetostearyl cawv yog cov organic tebchaw tseem ceeb. Qhov sib txawv tseem ceeb ntawm cetyl cawv thiab cetostearyl cawv yog tias cetyl cawv yog ib qho tshuaj lom neeg, hos cetostearyl cawv yog cov tshuaj sib xyaw ua ke.
