amakuru

Ubu abantu bafite amahitamo menshi mu kwita ku ruhu, ibintu bisiga izuba gusa ni amoko arenga 10, ariko bimwe mu bikoresho bisiga uruhu bisa nkaho bibangamira uruhu rwacu. None se twahitamo dute ibikoresho bisiga uruhu bikwiye? Reka tuvuge kuri benzophenone-4, ikintu cy'ingenzi mu bikoresho bisiga uruhu.

Benzophenone-4 ni iki?

Benzophenone-4ni ikintu cya benzophenone, cyitwa BP-4, formula ya shimi C14H12O6S. Ni ifu y'umweru cyangwa umuhondo woroshye mu bushyuhe bw'icyumba kandi ishobora kwinjiza neza urumuri rwa UV ruri hagati ya dogere 285 na 325. Nk'igikoresho cy'urumuri rwa ultraviolet, BP-4 ifite ibyiza byo kwinjiza cyane, kudahumanya, kudatera teratogenic, urumuri rwiza no kudahungabana k'ubushyuhe, nibindi., igikoresho cy'urumuri rwa BP-4 gishobora kwinjiza UV-A na UV-B icyarimwe, ni igikoresho cy'urumuri rwa green sundress cyemewe na Leta Zunze Ubumwe za Amerika FDA, Leta Zunze Ubumwe za Amerika n'ibihugu by'i Burayi bikunze gukoreshwa cyane, ahanini gikoreshwa mu mavuta yo kwisiga akingira izuba n'ibindi bikoresho byo kwisiga bikingira izuba.

Umuyoboro w'amashanyarazi ufata UV BP-4Ntirigira uburozi, ntiritwika, ntiriturika, ryoroshye kwinjiza ubushuhe mu kirere, ni igikoresho cyiza cyane cyo gukurura aside mu mazi ya UV, gishobora kwinjiza urumuri rwa UV cyane. Gikoreshwa cyane nk'icyuma gikurura ultraviolet mu gutwikira polymer ishingiye ku mazi n'irangi ry'umuhengeri kugira ngo hirindwe ko irangi rya polymer ishingiye ku mazi n'irangi ry'umuhengeri rishobora kwangirika; Ni umuti mwiza wo kwisiga ku zuba kandi ni icyuma gikurura ultraviolet kugira ngo cyongere ubushobozi bwo guhangana n'ikirere cy'imyenda y'ubwoya.

Benzophenone ikoreshwa cyane mu bikoresho byo mu rugo nk'indorerwamo z'izuba, ibipfunyika mu biribwa, kumesa no mu bikoresho byo gusukura kugira ngo birinde imirasire y'izuba. Ishobora kwanduza amazi yo kunywa no kuva mu bipfunyika mu biribwa ikajya mu biribwa. Benzophenone ikoreshwa mu irangi rimwe na rimwe ripfunyika mu biribwa kandi ishobora kwimukira mu biribwa. Benzophenone iboneka mu biribwa bimwe na bimwe (nk'imizabibu ya divayi n'imizabibu ya Muscat) kandi yongerwa mu bindi nk'uburyohe.

Mu bikoresho byo kwisiga, benzophenone ikoreshwa nk'umuti wongera impumuro cyangwa mu gukumira ko ibintu nk'amasabune bitakaza impumuro n'ibara byabyo bitewe n'urumuri rwa ultraviolet. Ibikomoka kuri Benzophenone nka BP2 na oxybenzone (BP3) nabenzophenone-4 (BP-4)zikoreshwa mu mavuta yo kwisiga ku zuba. Oxybenzone ikoreshwa nk'umuti ufata imirasire y'urumuri kandi ugatuma ihora imeze neza, cyane cyane muri pulasitiki no mu mavuta yo kwisiga ku zuba. Benzophenone na oxybenzone bikoreshwa kandi mu mavuta yo kwisiga ku nzara no mu mavuta yo kwisiga ku minwa.

Ni iki benzophenone-4 ikoreshwa mu kwita ku ruhu?

BP-4 ifata UV ifite ibyiza byo kudahungabana k'urumuri no kudahungabana k'ubushyuhe, kandi ikoreshwa cyane mu mavuta yo kwisiga akingira izuba, amavuta yo kwisiga, ubuki, amavuta yo kwisiga, amavuta n'ibindi bikoresho byo kwisiga bikingira izuba. By'umwihariko ikoreshwa mu mavuta yo kwisiga akingira izuba, amavuta yo kwisiga, irangi, igipimo rusange ni 0.1-0.5%. Igipimo gisanzwe ni 0.2-1.5%.

Akamashini gafata UVBP-4Biroroshye gushonga mu mazi, kandi umuti w’amazi ni aside, bityo ugomba gukurwamo umwuka mu gihe ukoreshwa. Umuti PH irenze 9 uzatuma uburebure bw’umuraba bugabanuka, ikoreshwa ry’ibanze ry’izuba rya buri munsi n’ibindi bikoresho byo kwita ku ruhu kugira ngo hirindwe gusaza k’uruhu guterwa n’urumuri rwa ultraviolet.

Ni iki benzophenone-4 ikoreshwa mu kwita ku ruhu?