Isihlungi se-UV I-Octyl Methoxycinnamate CAS 5466-77-3 Octyl 4-Methoxycinnamate

I-Octyl methoxycinnamate, eyaziwa nangokuthi i-ethylhexyl methoxycinnamate (EHMC), iyinhlanganisela yemvelo esetshenziswa ngokuyinhloko njengesihlungi se-UV emikhiqizweni ehlukahlukene yezimonyo neyokunakekelwa komuntu siqu. Inefomula yamakhemikhali engu-C16H24O3 futhi ihlukaniswa njenge-methoxycinnamate ester. Le nhlanganisela yaziwa kabanzi ngekhono layo lokumunca imisebe ye-ultraviolet (UV), ikakhulukazi imisebe ye-UVB, eyingozi esikhumbeni somuntu.

Ukwakheka Kwamakhemikhali Nezakhiwo

Ngokwekhemikhali, i-octyl methoxycinnamate isuselwa ku-methoxycinnamic acid, ephuma ku-cinnamic acid eneqembu le-methoxy elinamathiselwe. I-octyl moiety, etholakala ku-2-ethylhexanol, inikeza i-compound ngezakhiwo ze-lipophilic, iyenza inyibilike emafutheni nakwezinye izincibilikisi eziphilayo, ngaleyo ndlela ithuthukise ukuhambisana kwayo nokubunjwa kwezimonyo.

I-Octyl methoxycinnamate ibonisa i-spectrum ethile yokumunca i-UV, imunca imisebe ye-UVB ebangeni lama-nanometers angu-280 kuya kwangu-320 (nm). Lolu hlu lubaluleke kakhulu ngoba imisebe ye-UVB inesibopho sokushiswa yilanga futhi inomthelela ekulimaleni kwesikhumba, okuhlanganisa ukuguga ngaphambi kwesikhathi kanye nengozi eyengeziwe yokuba nomdlavuza wesikhumba. Ngokumunca le misebe eyingozi, i-octyl methoxycinnamate isiza ukuvikela isikhumba kule miphumela emibi.

Isetshenziswa Kwezimonyo Nemikhiqizo Yokuvikela Ilanga

Embonini yezimonyo, i-octyl methoxycinnamate iyisithako esisetshenziswa kakhulu ekwenziweni kokuvikela ilanga. Ivamise ukuhlanganiswa nezinye izihlungi ze-UV ukuze kwakhiwe okokuvikela ilanga okubanzi okuhlinzeka ngokuvikeleka emisebeni ye-UVA ne-UVB. Inhlanganisela yezihlungi ezihlukene ibalulekile ngoba uhlobo ngalunye lwesihlungi lumunca uhla oluthile lwamaza wamaza, ngaleyo ndlela lunikeze ukuvikeleka okuphelele.

Izikrini zelanga eziqukethe i-octyl methoxycinnamate ngokuvamile zenzelwe ukuthi zimelane namanzi, ziqinisekisa ukuthi umkhiqizo uhlala usebenza ngisho nangemva kokuchayeka emanzini noma umjuluko. Lokhu kubaluleke kakhulu emisebenzini yangaphandle nakwezemidlalo, lapho izithasiselo zokuvikela ilanga zingagezwa, okushiya isikhumba sisengozini yokulimala kwe-UV.

Ukucatshangelwa Kokuphepha Nokulawula

Ukuphepha kwe-octyl methoxycinnamate kuye kwahlaziywa kabanzi yizinhlangano ezilawulayo ezifana ne-US Food and Drug Administration (FDA) kanye Nekomidi Lesayensi Yekhomishini YaseYurophu Yokuphepha Kwabathengi (SCCS). Ngokwalezi zinhlangano, i-octyl methoxycinnamate ithathwa njengephephile ukuthi isetshenziswe emikhiqizweni yezimonyo, okuhlanganisa nama-sunscreens, uma isetshenziswa ngaphakathi kwemikhawulo ethile yokuhlushwa.

Kodwa-ke, njengazo zonke izihlungi zekhemikhali ze-UV, i-octyl methoxycinnamate inamandla okuba nemiphumela engemihle uma isetshenziswa kabi noma uma ukugxila kudlula amazinga anconyiwe. Olunye ucwaningo luphakamise ukuthi lungabangela ukucasuka noma ukungezwani komzimba kubantu abazwelayo. Ngakho-ke, kubalulekile ukuthi abakhiqizi balandele imihlahlandlela ehlinzekwa yizinhlangano ezilawulayo kanye nokuthi abathengi bafunde ngokucophelela futhi balandele imiyalelo yokusetshenziswa.

Umthelela Wezemvelo

Umthelela wemvelo we-octyl methoxycinnamate yisihloko socwaningo oluqhubekayo. Olunye ucwaningo lubonise ukuthi lungaba nomthelela onobuthi oncike ekugxiliseni ezintweni eziphila emanzini, ikakhulukazi emazingeni aphezulu. Lokhu kuye kwaholela ekukhathazekeni mayelana nethuba lokuthi inqwabelane ezindaweni zasolwandle, ikakhulukazi ezindaweni ezisogwini lapho kusetshenziswe kakhulu imikhiqizo yokuvikela ilanga.

Ngenxa yalokho, kunentshisekelo ekhulayo ekuthuthukisweni kwezindlela ezihlukile zokuvikela i-sunscreen ezinobungani nemvelo. Nakuba i-octyl methoxycinnamate isalokhu iyisihlungi se-UV esisetshenziswa kabanzi futhi esisebenza ngempumelelo, umthelela wayo kwezemvelo ugqugquzele ukufuna izinketho ezisimeme, njengezivimbeli ezibonakalayo (isb., i-zinc oxide ne-titanium dioxide) kanye nezihlungi zamakhemikhali ezinoveli ezingenabungozi kangako empilweni yasemanzini.

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