Ngaba i-hydroxypropyl cellulose inetyhefu?

I-Hydroxypropyl cellulose (HPC) yi-non-toxic, biodegradable, kunye ne-polymer enyibilikayo emanzini ephuma kwi-cellulose. Isetyenziswa kuluhlu olubanzi lweemveliso, kubandakanywa amayeza, izithambiso, ukutya, kunye neemveliso zoshishino. I-HPC ngokuqhelekileyo ithathwa njengekhuselekile ukuba isetyenziswe ngabantu kwaye ivunyiwe ukuba isetyenziswe ekutyeni nakwimveliso yokuthambisa yi-US Food and Drug Administration (FDA).

I-HPC yinto engeyiyo ityhefu, ayithukutheli, kwaye ayinayo i-allergenic. Ayithathwa njenge-carcinogen, i-mutagen, okanye i-teratogen, kwaye ayibangeli nayiphi na imiphumo emibi kubantu okanye kwizilwanyana xa isetyenziswe ngokuhambelana ne-dosage ecetyiswayo. I-HPC nayo ayaziwa ngokuba yityhefu yokuzala okanye yophuhliso.

Ukongeza, i-HPC ayaziwa njengengozi yokusingqongileyo. Ayithathwa njengento eqhubekayo, i-bioaccumulative, okanye ityhefu (PBT) okanye eqhubekayo kwaye i-bioaccumulative kakhulu (vPvB). I-HPC nayo ayidweliswanga njengento eyingozi okanye ungcoliseko phantsi koMthetho woMoya ococekileyo okanye uMthetho waManzi acocekileyo.

I-HPC isetyenziswa njenge-thickener, emulsifier, kunye ne-stabilizer kwi-cosmetic formulations efana ne-shampoos, i-conditioners, kunye ne-lotions.

Ngaphandle kobume bayo obungeyotyhefu, i-HPC kufuneka isaphathwa ngononophelo. Ukungeniswa kwexabiso elikhulu le-HPC kunokubangela ukucaphuka kwesisu, isicaphucaphu, ukuhlanza, kunye nohudo. Ukuphefumla uthuli lwe-HPC kunokubangela ukucaphuka kwempumlo, umqala, kunye nemiphunga. Ukudibana kwamehlo kunye ne-HPC kunokubangela ukucaphuka kunye nokuba bomvu.

Ukuqukumbela, i-hydroxypropyl cellulose ngokuqhelekileyo ithathwa njengekhuselekile ukuba isetyenziswe ngabantu kwaye yamkelwe ukuba isetyenziswe kwiimveliso zokutya yi-FDA. Ayithathwa njenge-carcinogen, i-mutagen, okanye i-teratogen, kwaye ayibangeli nayiphi na imiphumo emibi kubantu okanye kwizilwanyana xa isetyenziswe ngokuhambelana ne-dosage ecetyiswayo. I-HPC nayo ayaziwa njengengozi yokusingqongileyo kwaye ayidweliswanga njengento enobungozi okanye ungcoliseko phantsi koMthetho woMoya ococekileyo okanye uMthetho waManzi acocekileyo. Nangona kunjalo, ukungeniswa kwexabiso elikhulu le-HPC kunokubangela ukucaphuka kwesisu, isicaphucaphu, ukuhlanza, kunye nesifo sohudo, ngelixa ukuphefumla uthuli lwe-HPC kunokubangela ukucaphuka kwempumlo, umqala kunye nemiphunga. Ukudibana kwamehlo kunye ne-HPC kunokubangela ukucaphuka kunye nokuba bomvu.