Sunscreen spray yog flammable thiab tawg

Lub vev xaib ntawm Lub Xeev Food and Drug Administration tau ceeb toom rau cov neeg siv khoom siv tshuaj pleev thaiv hnub "txhaj tshuaj" tshuaj pleev ib ce kom zoo.

Raws li huab cua kub, tshuaj pleev thaiv hnub tshuaj pleev ib ce tau dhau los ua cov khoom siv los ntawm cov neeg siv khoom hauv lawv lub neej txhua hnub. Vim tias nws cov ntawv tshiab thiab siv tau yooj yim, tshuaj pleev thaiv hnub "spray" tshuaj pleev ib ce tau nce siab los ntawm cov neeg siv khoom. Yog li, dab tsi yuav tsum tau them sai sai rau thaum siv tshuaj pleev thaiv hnub "spray" tshuaj pleev ib ce, thiab puas muaj kev nyab xeeb yog tias nws siv tsis raug? Ntawm no, peb ceeb toom cov neeg siv khoom kom xyuam xim rau peb lub ntsiab lus hauv qab no:

Cov tshuaj pleev thaiv hnub "spray" tshuaj pleev ib ce yog dab tsi

Raws li Cov Cai Kev Cai Lij Choj thiab Cov Ntawv Sau Npe ntawm Cov Tshuaj pleev ib ce, cov tshuaj pleev ib ce tuaj yeem muab faib ua cov kua nplaum, kua, hmoov, tshuaj tsuag, aerosol thiab lwm cov ntaub ntawv ntau npaum li cov khoom noj. Cov tshuaj pleev thaiv hnub "spray" tshuaj pleev ib ce nyob rau hauv kev ua lag luam feem ntau tuaj yeem muab faib ua ob hom: aerosol hom thiab aerosol hom. Qhov txawv yog nyob rau hauv seb propellant puas suav nrog. Cov tshuaj tsuag hom tshuaj pleev ib ce tsis muaj cov tshuaj tiv thaiv, thiab lawv tsuas yog tso siab rau qhov sib txawv ntawm qhov sib txawv ntawm lub tshuab nqus tsev twj tso kua mis los txau cov tshuaj tsuag. Cov "fog" txau yog feem ntau cov tee loj (particles). Cov tshuaj pleev ib ce Aerosol muaj cov tshuaj tiv thaiv, uas feem ntau yog vam khom lub zog ntawm lub zog uas tsim los ntawm cov kua rau hauv lub xeev roj thaum cov khoom siv tawm. Cov "fog" ejected yog feem ntau me me (particles), thiab cov khoom no feem ntau yog ntim rau hauv cov kaus poom hlau.

Kev pheej hmoo ntawm kev siv tshuaj pleev thaiv hnub tsis zoo "txhaj tshuaj" tshuaj pleev ib ce

Kev siv tshuaj pleev thaiv hnub tsis zoo "txhaj tshuaj" tshuaj pleev ib ce muaj ob qhov kev pheej hmoo tseem ceeb: ib qho yog kev pheej hmoo ntawm kev nqus pa. Thaum cov neeg siv khoom siv tshuaj pleev thaiv hnub "txhaj tshuaj" tshuaj pleev ib ce rau ntawm lawv daim tawv nqaij, lawv yuav tsis txhob txwm nqus cov tshuaj tsuag, uas yuav muaj cov tshuaj pleev thaiv hnub, cov tshuaj tsis haum xeeb, cov txuj lom, tshuaj tua kab mob thiab lwm yam khoom siv tshuaj pleev ib ce. Thaum siv ntau heev hauv qhov chaw nqaim, xws li hauv lub tsheb nrog lub qhov rais kaw, nws yuav ua rau kom nqus tau ntau hauv lub sijhawm luv luv, uas yuav ua rau muaj kev phom sij rau kev noj qab haus huv. Tshwj xeeb tshaj yog rau cov menyuam yaus uas muaj kev tsis haum xeeb uas muaj kev nkag siab zoo rau txoj hlab pa, nws yooj yim rau kev hnoos hnyav lossis hawb pob tawm tsam. Piv nrog rau cov tshuaj pleev ib ce aerosol, cov tshuaj pleev ib ce aerosol muaj kev pheej hmoo siab dua ntawm kev nqus pa thaum siv vim tias cov kua dej me me. Qhov thib ob yog qhov kev pheej hmoo ntawm flammability thiab tawg. Vim lub fact tias cov propellants siv nyob rau hauv aerosol formulations tej zaum yuav flammable tshuaj xws li butane thiab propane, thiab nyob rau hauv ib tug liquefied high-pressure xeev, lawv muaj feem xyuam rau detonation xwm txheej thaum raug hluav taws kub qhov chaw. Yog li ntawd, kev saib xyuas yuav tsum tau them nyiaj rau kev tiv thaiv hluav taws thiab tawg thaum siv thiab khaws cov tshuaj pleev thaiv hnub "spray" tshuaj pleev ib ce.

Yuav ua li cas kom siv tshuaj pleev thaiv hnub "txhaj" tshuaj pleev ib ce

Kev siv tshuaj pleev thaiv hnub "txhaj" tshuaj pleev ib ce, tshwj xeeb tshaj yog cov tshuaj pleev ib ce aerosol uas muaj cov tshuaj tiv thaiv, yuav tsum tau xyuam xim rau peb cov ntsiab lus hauv qab no: ua ntej, sim kom tsis txhob nqus cov tshuaj "txhaj tshuaj". Tshuaj pleev thaiv hnub "txhaj tshuaj" tshuaj pleev ib ce yuav tsum tau siv nyob rau hauv cov chaw uas muaj huab cua ncig, tsis yog nyob rau hauv nqaim thiab confined qhov chaw xws li tsheb thiab chav dej. Thaum txau, ceev faj kom tsis txhob muaj qhov ntswg, qhov ncauj, thiab qhov muag, thiab sim ua kom tsis txhob nqus pa kom ntau li ntau tau. Yog tias nqus tau cov tshuaj pleev ib ce "txhaj" ntau, ua rau mob qhov ntswg, caj pas tsis xis nyob, hnoos, hawb pob, mob hauv siab, thiab lwm yam, koj yuav tsum xub mus rau qhov chaw ntawm huab cua hauv lub sijhawm, thiab ntxuav cov tshuaj pleev ib ce kom tsis txhob muaj kev sib cuag ntxiv. Yog tias cov tsos mob ua npaws, hnoos, hawb pob, mob hauv siab, thiab lwm yam mob hnyav, yuav tsum tau nrhiav kev kho mob tam sim ntawd. Qhov thib ob, ua tib zoo khaws cov tshuaj pleev thaiv hnub "txhaj" tshuaj pleev ib ce nyob rau hauv qhov chaw txias, qhuav thiab qhov cua kom tsis txhob tshav ntuj ncaj qha; Thaum siv, nws yuav tsum tau khaws cia kom deb ntawm qhov hluav taws kub, cua sov, hluav taws xob zoo li qub, cuam tshuam, thiab lwm yam, kom tsis txhob tho los yog pov cov khoom lossis siv cov kaus poom khoob rau hauv qhov hluav taws kub. Thib peb, tsis txhob siv tshuaj pleev thaiv hnub "txhaj" tshuaj pleev ib ce rau ntawm qhov txhab, liab, o, eczema thiab lwm yam txawv txav ntawm daim tawv nqaij.

Raws li Cov Lus Qhia rau Cov Menyuam Yaus Cov Tshuaj Txhuam Hniav uas tau muab los ntawm Tuam Tshoj Lub Tsev Haujlwm Saib Xyuas Khoom Noj thiab Tshuaj Tiv Thaiv thaum Lub Yim Hli 31, 2023, "Cov menyuam yaus tsis raug pom zoo kom siv tshuaj pleev thaiv hnub pleev tshuaj pleev ib ce. kev pheej hmoo ntawm kev nqus pa, thiab txoj kev siv yuav tsum tau cim nrog "Tsis txhob ncaj qha rau ntawm lub ntsej muag", "Tsis txhob nqus pa" thiab lwm yam lus ceeb toom zoo sib xws ". Ntawm no, peb kuj xav ceeb toom rau cov niam txiv thiab cov phooj ywg tias cov menyuam yaus tsis pom zoo kom siv tshuaj pleev thaiv hnub "txhaj tshuaj" tshuaj pleev ib ce, tshwj xeeb tshaj yog cov menyuam yaus thiab cov menyuam yaus uas muaj kev fab tshuaj. Xws li cov tshuaj pleev ib ce yuav tsum tau khaws cia kom deb ntawm cov menyuam yaus. Vim hais tias cov me nyuam tsis muaj peev xwm tsim tau txhua yam, lawv lub peev xwm tswj tau qhov ua pa tsis muaj zog, thiab cov menyuam yaus tsis muaj lub siab lub ntsws, lawv muaj feem ntau ua rau lub qhov ntswg, qhov ncauj, qhov muag thiab lwm yam tshwm sim thaum siv tshuaj pleev thaiv hnub "txhaj tshuaj" tshuaj pleev ib ce, ua rau muaj kev phom sij rau kev noj qab haus huv; Yog tias tsim nyog, cov niam txiv tuaj yeem txau cov khoom ntawm lub xib teg ntawm lawv txhais tes thiab tom qab ntawd siv rau saum npoo ntawm cov menyuam yaus ntawm daim tawv nqaij.