iindaba

Ngoku abantu banokukhetha okuninzi ekunyamekeleni ulusu, izithako ze-sunscreen kuphela ziindidi ezingaphezu kwe-10, kodwa ezinye iimveliso zokhathalelo lolusu zibonakala ngathi ziya kulonakalisa ulusu lwethu. Ngoko ke singakhetha njani iimveliso zokhathalelo lolusu ezifanelekileyo kulusu lwethu? Masithethe nge-benzophenone-4, isithako esibalulekileyo kwiimveliso zokhathalelo lolusu.

Yintoni i-benzophenone-4?

I-Benzophenone-4yi-benzophenone compound, ebizwa ngokuba yi-BP-4, ifomula yekhemikhali i-C14H12O6S. Yipowder emhlophe okanye etyheli ekhanyayo kubushushu begumbi kwaye inokufunxa ngokufanelekileyo ukukhanya kwe-UV ukusuka kwi-285 ukuya kwi-325 Im. Njenge-broad spectrum ultraviolet absorber, i-BP-4 ineenzuzo zesantya esiphezulu sokufunxa, isiphumo esingenabungozi, esingena-teratogenic, ukukhanya okuhle kunye nokuzinza kobushushu, njl.njl., i-UV absorber i-BP-4 inokufunxa i-UV-A kunye ne-UV-B ngaxeshanye, yi-class I sunscreen evunyiweyo yi-United States FDA, i-United States kunye namazwe aseYurophu asebenzisa rhoqo, ikakhulu isetyenziswa kwi-sunscreen cream kunye nezinye izithambiso ze-sunscreen.

I-UV efunxayo i-BP-4Ayinatyhefu, ayitshi, ayiqhumi, kulula ukufunxa umswakama emoyeni, isebenza kakuhle kakhulu kwi-asidi yamanzi efunxa i-UV, inokufunxa ukukhanya kwe-UV ngamandla. Isetyenziswa kakhulu njenge-ultraviolet absorber kwiingubo ze-polymer ezisekelwe emanzini kunye nepeyinti emfusa ukuthintela i-photocatalytic oxidation yeengubo ze-polymer ezisekelwe emanzini kunye nepeyinti emfusa; Yi-sunscreen elungileyo kwizimonyo kwaye yi-UV absorber ukuphucula ukumelana nemozulu kwamalaphu oboya.

I-Benzophenone isetyenziswa kakhulu kwizinto zasekhaya ezifana neeglasi zelanga, ukupakisha ukutya, iimpahla kunye neemveliso zokucoca ukukhusela ukuvezwa yi-UV. Ingcolisa amanzi okusela kwaye isuke kwiphakheji yokutya iye ekutyeni. I-Benzophenone isetyenziswa kwii-inki zokupakisha ukutya kwaye ingafudukela ekutyeni. I-Benzophenone ivela ngokwendalo kukutya okuthile (okufana neediliya zewayini kunye neediliya zeMuscat) kwaye yongezwa kwezinye njenge-arhente yokunambitha.

Kwiimveliso zokunyamekela umntu, i-benzophenone isetyenziswa njengesithambisi sevumba okanye ukuthintela iimveliso ezifana neesepha ukuba zingaphulukani nevumba lazo kunye nombala phantsi kokukhanya kwe-ultraviolet. Izinto eziphuma kwi-Benzophenone ezifana ne-BP2 kunye ne-oxybenzone (BP3) kunyei-benzophenone-4 (BP-4)zisetyenziswa kwi-sunscreens. I-Oxybenzone isetyenziswa njenge-ultraviolet absorber kunye ne-stabilizer, ingakumbi kwi-plastiki kunye ne-sunscreens. I-Benzophenone kunye ne-oxybenzone zikwasetyenziswa kwi-nail polish kunye ne-lip balm.

Yintoni i-benzophenone-4 esetyenziselwa ukhathalelo lolusu?

Isithambisi se-UV i-BP-4 sineengenelo zokukhanya okuhle kunye nokuzinza kobushushu, kwaye sisetyenziswa kakhulu kwikhrimu yelanga, ukhilimu, ubusi, iloshini, ioyile kunye nezinye izinto zokuthambisa ilanga. Ifanelekile ngokukodwa kwi-sunscreen, iloshini, ipeyinti, idosi ngokubanzi yi-0.1-0.5%. Idosi eqhelekileyo yi-0.2-1.5%.

Isifunxi se-UVI-BP-4Inyibilika lula emanzini, kwaye isisombululo samanzi sine-asidi, ngoko ke kufuneka sisuswe xa sisetyenziswa. Isisombululo i-PH engaphezulu kwe-9 siya kubangela ukuba ubude bomda wokufunxa bunciphe, ukusetyenziswa okuphambili kwe-sunscreen yemihla ngemihla kunye nezinye iimveliso zokhathalelo lolusu ukuthintela ukuguga kolusu okubangelwa kukukhanya kwe-ultraviolet.

Yintoni i-benzophenone-4 esetyenziselwa ukhathalelo lolusu?