amakuru

Ubu abantu bafite amahitamo menshi mukwitaho uruhu, gusa ibikoresho byizuba byizuba birenze ubwoko 10, ariko bimwe mubicuruzwa byita kuruhu bisa nkaho kwita kuburuhu mubyukuri aribyo byangiza uruhu rwacu. Nigute dushobora guhitamo ibicuruzwa byiza byita kuruhu kuruhu rwacu? Reka tuvuge kuri benzophenone-4, ikintu cyingenzi mubicuruzwa byuruhu.

Benzophenone-4 ni iki?

Benzophenone-4ni uruganda rwa benzophenone, rwitwa BP-4, imiti ya C14H12O6S. Ni ifu yera cyangwa yoroheje yumuhondo mubushyuhe bwicyumba kandi irashobora gukuramo neza urumuri rwa UV rwa 285 kugeza 325 Im. Nka nini ya ultraviolet ikurura, BP-4 ifite ibyiza byo kwinjizwa cyane, kutagira uburozi, kutagira teratogene, urumuri rwiza hamwe nubushyuhe bwumuriro, nibindi, UV ikurura BP-4 irashobora gukuramo UV-A na UV-B icyarimwe, nicyiciro cya I cyizuba cyizuba cyemejwe na Reta zunzubumwe za Amerika FDA, Reta zunzubumwe zamerika hamwe n’ibihugu by’Uburayi bifite inshuro nyinshi zo gukoresha, cyane cyane bikoreshwa mu mavuta yizuba ndetse nandi mavuta yo kwisiga yizuba.

Uv ikurura BP-4ni uburozi, butaka umuriro, ntibuturika, byoroshye kwinjiza amazi mu kirere, ni imikorere myiza yimyunyu ngugu ya aside irike ya UV, irashobora gukurura cyane urumuri rwa UV. Ikoreshwa cyane nka ultraviolet ikurura amazi ashingiye kumazi ya polymer hamwe n irangi ry'umuyugubwe kugirango wirinde okiside ya fotokatalitike ya polymer ishingiye kumazi hamwe n irangi ry'umuyugubwe; Nizuba ryiza ryamavuta yo kwisiga hamwe nogukoresha UV kugirango irusheho guhangana nikirere cyimyenda yubwoya.

Benzophenone ikoreshwa cyane mu bikoresho byo mu rugo nk'amadarubindi y'izuba, gupakira ibiryo, kumesa n'ibikoresho byoza kugira ngo wirinde kwandura UV. Irashobora kwanduza amazi yo kunywa no kwimuka mubipfunyika ibiryo bijya mubiryo. Benzophenone ikoreshwa muri wino ipakira ibiryo kandi irashobora kwimukira mubiryo. Benzophenone iboneka mubisanzwe mubiribwa bimwe na bimwe (nk'imizabibu ya vino n'imizabibu ya Muscat) kandi ikongerwaho kubandi nkibintu biryoha.

Mu bicuruzwa byita ku muntu ku giti cye, benzophenone ikoreshwa nk'iyongerera impumuro nziza cyangwa gukumira ibicuruzwa nk'isabune gutakaza impumuro nziza n'ibara munsi y'urumuri ultraviolet. Ibikomoka kuri Benzophenone nka BP2 na oxybenzone (BP3) nabenzophenone-4 (BP-4)zikoreshwa mu zuba. Oxybenzone ikoreshwa nka ultraviolet yinjiza na stabilisateur, cyane cyane muri plastiki ndetse nizuba. Benzophenone na oxybenzone nazo zikoreshwa mu gusiga imisumari no kwisiga.

Niki benzophenone-4 ikoreshwa mukuvura uruhu?

Uv ikurura BP-4 ifite ibyiza byumucyo nubushyuhe bwiza, kandi ikoreshwa cyane muma cream yizuba, cream, ubuki, amavuta yo kwisiga, amavuta nibindi byo kwisiga izuba. Cyane cyane kibereye izuba, amavuta yo kwisiga, irangi, dosiye rusange ni 0.1-0.5%. Igipimo gisanzwe ni 0.2-1.5%.

UvBP-4byoroshye gushonga mumazi, kandi igisubizo cyamazi ni acide, bityo rero igomba kubogama mugihe cyo kuyikoresha. Igisubizo PH irenze 9 izatera uburebure bwumubyimba kugabanuka, ikoreshwa ryibanze ryizuba rya buri munsi nibindi bicuruzwa byita kuruhu kugirango wirinde gusaza kwuruhu biterwa numucyo ultraviolet.

Niki benzophenone-4 ikoreshwa mukuvura uruhu?