Hydroxyethyl cellulose (HEC) isiri-ionic, mvura-inonyungudika polima inotorwa kubva muselulosi, chiri chinhu chakasikwa chinowanikwa mumadziro emiti. Iyo ine huwandu hwakasiyana hwekushandisa mumaindasitiri akasiyana, anosanganisira emishonga, zvizorwa, chikafu, uye kuvaka, zvakanyanya nekuda kwekukora, kusunga, emulsifying, uye kudzikamisa zvivakwa. Nekudaro, sechinhu chero chipi zvacho, kuchengetedzwa kweHEC kunoenderana nekushandiswa kwayo chaiko, kutarisisa, uye kuratidzwa.
Kazhinji, HEC inoonekwa seyakachengeteka kushandiswa mumaindasitiri ambotaurwa kana ichishandiswa mukati memirayiridzo yakataurwa. Nekudaro, pane zvimwe zvekufunga kufunga nezve kuchengetedzwa kwayo:
Oral Ingestion: Kunyange zvazvo HEC inowanzozivikanwa seyakachengeteka kushandiswa mukudya uye kushandiswa kwemishonga, kunyanya kunwa kweHEC kunogona kutungamirira kumarwadzo emimba. Nekudaro, zvakakosha kucherechedza kuti HEC haiwanzo kudyiwa zvakananga uye inowanzovapo mune zvigadzirwa mune yakaderera zvakanyanya.
Skin Sensitization: Muzvigadzirwa zvekuzora uye zvekuchengetedza munhu, HEC inowanzoshandiswa seyakakora, binder, uye inodzikamisa mumigadziriso senge makirimu, lotions, uye shampoos. Inowanzoonekwa seyakachengeteka kushandiswa kwepamusoro, asi vamwe vanhu vanogona kusangana neganda rinoputika kana kusawirirana kweHEC, kunyanya kana vane pre-exist sensitivities kune cellulose derivatives.
Kutsamwiswa Kweziso: Mune zvimwe zviitiko, HEC-ine zvigadzirwa, senge madonhwe eziso kana kuonana lens mhinduro, zvinogona kukonzera kutsamwa kumaziso, kunyanya kana chigadzirwa chakasvibiswa kana kushandiswa zvisina kunaka. Vashandisi vanofanira kugara vachitevera mirairo yekushandisa uye kutsvaga kurapwa kana kutsamwa kukaitika.
Respiratory Sensitization: Kufemerwa kweguruva reHEC kana aerosols kunogona kukonzera kushatirwa kwekufema kana kunzwisiswa mune vamwe vanhu, kunyanya avo vane mamiriro ekufema agara aripo kana kunzwisiswa kune zvimedu zvinopeperetswa nemhepo. Kubata kwakakodzera uye kufefetera kunofanirwa kuve nechokwadi kana uchishanda nemhando dzehupfu dzeHEC.
Environmental Impact: Nepo HEC pachayo iine biodegradable uye nharaunda isina kunaka, maitiro ekugadzira uye kuraswa kweHEC-ine zvigadzirwa zvinogona kuve nemhedzisiro yezvakatipoteredza. Kuedza kunofanira kuitwa kuderedza marara uye kusvibiswa kwakabatana nekugadzirwa, kushandiswa, uye kuraswa kweHEC-based products.
Masangano anodzora akadai seUS Food and Drug Administration (FDA), European Food Safety Authority (EFSA), uye Cosmetic Ingredient Ongororo (CIR) Expert Panel vakaongorora kuchengetedzeka kweHEC uye vakaona yakachengeteka pakushandisa kwainoda kushandiswa mukati mezvakataurwa. concentrations. Nekudaro, zvakakosha kuti vagadziri vatevedzere nhungamiro uye kuve nechokwadi chemhando uye kuchengetedzeka kwezvigadzirwa zvavo kuburikidza nekuyedza kwakakodzera uye matanho ekudzora mhando.
hydroxyethyl cellulose inowanzoonekwa yakachengeteka kuti ishandiswe mumaindasitiri akasiyana kana ichishandiswa nemazvo uye mukati megwara rakatarwa. Nekudaro, sekunge chero chinhu chemakemikari, kubata kwakaringana, kuchengetedza, uye kurasa maitiro kunofanirwa kuteverwa kudzikisa njodzi dzinogona kuitika kuhutano hwevanhu uye nharaunda. Vanhu vane hanya chaizvo nezveHEC kana zvigadzirwa zvine HEC vanofanirwa kubvunzana nenyanzvi dzehutano kana zviremera zvinodzora kuti vawane zano remunhu.
Nguva yekutumira: Mar-13-2024