Ngaba i-hydroxyethyl cellulose iyingozi?

I-Hydroxyethyl cellulose (HEC) i-non-ionic, i-polymer e-soluble yamanzi ephuma kwi-cellulose, into engokwemvelo efumaneka kwiindonga zeeseli zezityalo. Inoluhlu olubanzi lwezicelo kumashishini ahlukeneyo, kubandakanya amayeza, izinto zokuthambisa, ukutya, kunye nolwakhiwo, ikakhulu ngenxa yokuqina kwayo, ukubopha, ukumilisela kunye nokuzinzisa iipropathi. Nangona kunjalo, njengayo nayiphi na into, ukhuseleko lwe-HEC luxhomekeke kusetyenziso oluthile, ukugxininiswa, kunye nokuvezwa.

Ngokubanzi, i-HEC ithathwa njengekhuselekile ukusetyenziswa kumashishini akhankanywe ngasentla xa isetyenziswe ngaphakathi kwezikhokelo ezichaziweyo. Nangona kunjalo, kukho izinto ezithile ekufuneka zithathelwe ingqalelo malunga nokhuseleko lwayo:

Ukungeniswa ngomlomo: Nangona i-HEC ngokuqhelekileyo ibonwa njengekhuselekile ekusebenziseni ukutya kunye nezicelo zamachiza, ukugqithiswa ngokugqithisileyo kwe-HEC kunokukhokelela ekudakaleni kwesisu. Nangona kunjalo, kubalulekile ukuqaphela ukuba i-HEC ayidli ngokusetyenziswa ngokuthe ngqo kwaye ihlala ikhona kwiimveliso eziphantsi kakhulu.

I-Skin Sensitization: Kwiimveliso zokuzihombisa kunye nezomntu, i-HEC isetyenziswa ngokuqhelekileyo njenge-thickener, binder, kunye ne-stabilizer ekuqulunqweni okufana ne-creams, lotions, kunye ne-shampoos. Ngokuqhelekileyo kuthathwa njengekhuselekile ukusetyenziswa kwi-topical, kodwa abanye abantu banokufumana ukucaphuka kwesikhumba okanye ukusabela komzimba kwi-HEC, ngakumbi ukuba banemvakalelo esele ikhona kwi-cellulose derivatives.

Ukucaphuka kwamehlo: Kwezinye iimeko, iimveliso eziqulethwe yi-HEC, ezifana ne-eye drops okanye i-contact lens solutions, inokubangela ukucaphuka kwamehlo, ngakumbi ukuba imveliso ingcolile okanye isetyenziswe ngokungafanelekanga. Abasebenzisi kufuneka bahlale belandela imiyalelo yokusetyenziswa kwaye bafune unyango ukuba ukucaphuka kwenzeka.

Ukuphefumla: Ukuphefumla uthuli lwe-HEC okanye i-aerosols kunokubangela ukucaphuka kokuphefumula okanye ukwazisa kwabanye abantu, ngakumbi abo banezimo zokuphefumla esele zikho okanye uvakalelo kumasuntswana omoya. Ukuphathwa ngokufanelekileyo kunye nokungena umoya kufuneka kuqinisekiswe xa usebenza ngeefom ze-HEC ezinomgubo.

Impembelelo yokusiNgqongileyo: Ngelixa i-HEC ngokwayo iguquguquka kwaye ayinabungozi kokusingqongileyo, inkqubo yokuvelisa kunye nokulahlwa kweemveliso eziqulathe i-HEC kunokuba neempembelelo zokusingqongileyo. Kufuneka kwenziwe iinzame zokunciphisa inkunkuma kunye nongcoliseko olunxulumene nokuveliswa, ukusetyenziswa, kunye nokulahlwa kweemveliso ezisekelwe kwi-HEC.

Ii-arhente ezilawulayo ezifana ne-US Food and Drug Administration (FDA), i-European Food Safety Authority (EFSA), kunye ne-Cosmetic Ingredient Review (CIR) iPhaneli yeeNgcali zeNgcali ziye zavavanya ukhuseleko lwe-HEC kwaye zibone zikhuselekile ekusetyenzisweni okujoliswe kuzo ngaphakathi okuchaziweyo. ugxininiso. Nangona kunjalo, kubalulekile ukuba abavelisi bathobele izikhokelo zolawulo kwaye baqinisekise umgangatho kunye nokhuseleko lweemveliso zabo ngovavanyo olufanelekileyo kunye nemilinganiselo yokulawula umgangatho.

I-hydroxyethyl cellulose ngokuqhelekileyo ithathwa njengekhuselekile ukusetyenziswa kumashishini ahlukeneyo xa isetyenziswe ngokufanelekileyo kwaye ngaphakathi kwezikhokelo ezichaziweyo. Nangona kunjalo, njengakuyo nayiphi na imichiza, ukuphathwa ngokufanelekileyo, ukugcinwa, kunye neendlela zokulahla kufuneka zilandelwe ukunciphisa umngcipheko onokubakho kwimpilo yabantu kunye nokusingqongileyo. Abantu abanenkxalabo ethile malunga ne-HEC okanye iimveliso eziqulathe i-HEC kufuneka badibane neengcali zonyango okanye amagunya alawulayo ukuze bafumane iingcebiso zomntu.