Qhov sib txawv tseem ceeb ntawm oxybenzone thiab avobenzone yog tias oxybenzone muaj kev nyab xeeb los siv rau hauv cov tshuaj pleev thaiv hnub uas siv rau ntawm tib neeg cov tawv nqaij, qhov avobenzone tsis muaj kev nyab xeeb los siv tshuaj pleev thaiv hnub vim nws tuaj yeem degrade nyob rau hauv lub hnub thiab tsim teeb meem radicals..
Oxybenzone yog cov organic compound uas muaj cov tshuaj formula C14H12O3, thaum avobenzone yog cov organic compound uas muaj cov tshuaj formula C20H22O3.
Oxybenzone yog dab tsi?
Oxybenzone yog cov organic compound uas muaj cov tshuaj formula C14H12O3Nws tshwm sim raws li cov khoom daj-xim daj uas tuaj yeem nkag mus rau hauv ntau cov kuab tshuaj organic. Ntxiv mus, qhov sib xyaw no belongs rau chav kawm ntawm cov tshuaj tsw qab ketones hu ua benzophenones. Peb tuaj yeem pom oxybenzone ib txwm tshwm sim hauv cov nroj tsuag paj thiab nws kuj tau siv ntau yam tshuaj pleev thaiv hnub. Tsis tas li ntawd, cov khoom no muaj txiaj ntsig zoo hauv ntau cov yas, cov khoom ua si, rooj tog zaum, thiab ntau yam khoom siv.
Oxybenzone yog ib qho kev sib txuas ntawm cov molecule uas tuaj yeem nqus lub teeb ntawm qis zog hauv kev sib piv rau ntau lwm cov tshuaj tsw qab. Nws muaj ib pawg hydroxyl uas yog hydrogen-bonded rau ketone. Qhov kev sib txuas ntawm hydrogen no tuaj yeem ua rau lub teeb-absorption zog ntawm cov compound no.
Txoj kev loj ntawm kev tsim cov oxybenzone yog Friedel-Crafts cov tshuaj tiv thaiv ntawm benzoyl chloride nrog 3-methoxyphenol.
Daim duab 01: Kev tsim tawm ntawm Oxybenzone
Muaj ntau yam kev siv oxybenzone, uas suav nrog kev siv cov tshuaj no hauv cov yas ua UV lub teeb absorber thiab stabilizer. Ntxiv mus, peb tuaj yeem siv nws nrog rau lwm cov benzophenones los siv rau hauv cov tshuaj pleev thaiv hnub, tshuaj pleev plaub hau, thiab daim ntawv thov kom zoo nkauj. Qhov no feem ntau yog vim tias cov tshuaj no tuaj yeem tiv thaiv kev puas tsuaj los ntawm kev raug tshav ntuj. Tsis tas li ntawd, peb tuaj yeem pom cov khoom xyaw no hauv cov ntsia thawv polish. Oxybenzone kuj tseem ceeb raws li cov duab stabilizer rau cov khoom siv hluavtaws.
Avobenzone yog dab tsi?
Avobenzone yog cov organic compound uas muaj cov tshuaj formula C20H22O3. Nws yog cov khoom siv roj-soluble uas muaj txiaj ntsig zoo hauv cov khoom siv tshuaj pleev thaiv hnub rau kev nqus ntawm tag nrho cov spectrum ntawm UVA rays. Nws zoo nkaus li muaj xim tsis muaj kob.
Daim duab 02: Cov Qauv Tshuaj ntawm Avobenzone
Thaum xav txog cov khoom ntawm avobenzone, nws yog xim dawb rau daj crystalline hmoov uas muaj ntxhiab tsw tsw. Ntxiv mus, nws tuaj yeem yaj hauv isopropanol, dimethyl sulfoxide, decyl oleate, capric acid, triglycerides, thiab lwm yam roj. Tsis tas li ntawd, nws tsis yog dej-soluble.
Peb tuaj yeem npaj avobenzone los ntawm cov tshuaj tiv thaiv ntawm 4-tert-butylbenzoic methyl ester nrog 4-methoxyacetophenone hauv toluene nyob rau hauv muaj sodium amide los ntawm Claisen Condensation.
Zoo sib xws ntawm Oxybenzone thiab Avobenzone?
- Oxybenzone thiab avobenzone yog cov khoom xyaw tseem ceeb hauv cov tshuaj pleev thaiv hnub.
- Ob leeg tuaj yeem degrade nyob rau hauv lub hnub, txo lub peev xwm los tshuaj xyuas UVA rays
- Lawv tuaj yeem tso cov dawb radicals uas tuaj yeem ua rau muaj kev pheej hmoo mob qog noj ntshav
- Ob qho tib si tuaj yeem ua kom tawv nqaij laus thiab pab txhawb kev loj hlob ntawm kev ua xua
Qhov txawv ntawm Oxybenzone thiab Avobenzone yog dab tsi?
Oxybenzone thiab avobenzone yog cov ntsiab lus tseem ceeb hauv cov organic chemistry. Qhov sib txawv tseem ceeb ntawm oxybenzone thiab avobenzone yog tias oxybenzone muaj kev nyab xeeb los siv rau hauv cov tshuaj pleev thaiv hnub uas siv rau ntawm tib neeg cov tawv nqaij, qhov avobenzone tsis muaj kev nyab xeeb los siv tshuaj pleev thaiv hnub vim nws tuaj yeem degrade nyob rau hauv lub hnub thiab tsim teeb meem radicals.
Hauv qab no yog cov ntsiab lus ntawm qhov sib txawv ntawm oxybenzone thiab avobenzone nyob rau hauv daim ntawv qhia rau ib sab ntawm kev sib piv.
Summary – Oxybenzone vs Avobenzone
Oxybenzone yog cov organic compound uas muaj cov tshuaj formula C14H12O3, thaum avobenzone yog cov organic compound uas muaj cov tshuaj formula C20H22O3 Qhov sib txawv tseem ceeb ntawm oxybenzone thiab avobenzone yog tias oxybenzone muaj kev nyab xeeb los siv rau hauv cov tshuaj pleev thaiv hnub uas siv rau ntawm tib neeg cov tawv nqaij thaum avobenzone tsis muaj kev nyab xeeb los siv tshuaj pleev thaiv hnub vim nws tuaj yeem degrade nyob rau hauv lub hnub thiab tsim teeb meem radicals.
