Hydroxyethyl cellulose (HEC) yog non-ionic, dej-soluble polymer muab los ntawm cellulose, uas yog ib yam khoom ntuj pom nyob rau hauv lub cell phab ntsa ntawm cov nroj tsuag. Nws muaj ntau yam kev siv hauv ntau yam lag luam, suav nrog tshuaj, tshuaj pleev ib ce, khoom noj khoom haus, thiab kev tsim kho, feem ntau vim nws cov thickening, khi, emulsifying, thiab stabilizing zog. Txawm li cas los xij, zoo li txhua yam khoom siv, kev nyab xeeb ntawm HEC nyob ntawm nws qhov tshwj xeeb siv, concentration, thiab raug.
Feem ntau, HEC raug suav hais tias muaj kev nyab xeeb rau kev siv hauv kev lag luam uas tau hais los saum no thaum siv raws li cov lus qhia. Txawm li cas los xij, muaj qee qhov kev txiav txim siab los txiav txim siab txog nws txoj kev nyab xeeb:
Qhov ncauj noj: Thaum HEC feem ntau lees paub tias muaj kev nyab xeeb rau kev siv khoom noj thiab tshuaj, kev noj ntau dhau ntawm HEC tuaj yeem ua rau mob plab tsis zoo. Txawm li cas los xij, nws tsim nyog sau cia tias HEC tsis yog feem ntau noj ncaj qha thiab feem ntau yog tam sim no nyob rau hauv cov khoom hauv cov concentrations tsawg heev.
Kev hnov mob ntawm daim tawv nqaij: Hauv cov khoom siv tshuaj pleev ib ce thiab kev tu tus kheej, HEC feem ntau yog siv los ua cov thickener, binder, thiab stabilizer nyob rau hauv cov formulations xws li cream, lotions, thiab tshuaj zawv plaub hau. Nws feem ntau suav hais tias muaj kev nyab xeeb rau kev siv tshuaj pleev ib ce, tab sis qee tus neeg yuav muaj kev khaus khaus lossis ua xua rau HEC, tshwj xeeb tshaj yog tias lawv muaj qhov muaj txiaj ntsig ua ntej rau cellulose derivatives.
Qhov muag Irritation: Qee zaum, HEC-muaj cov khoom lag luam, xws li cov tshuaj pleev qhov muag lossis cov tshuaj tiv thaiv kab mob, tuaj yeem ua rau khaus qhov muag, tshwj xeeb yog tias cov khoom muaj kab mob los yog siv tsis raug. Cov neeg siv yuav tsum ua raws li cov lus qhia rau kev siv thiab nrhiav kev kho mob yog tias khaus tshwm sim.
Kev ua pa ua pa: Kev nqus ntawm HEC plua plav lossis aerosols tuaj yeem ua rau ua pa ua pa lossis hnov mob hauv qee tus neeg, tshwj xeeb yog cov neeg ua pa ua ntej lossis rhiab rau cov pa hauv huab cua. Kev tuav thiab qhov cua kom zoo yuav tsum tau ua kom ntseeg tau thaum ua haujlwm nrog cov hmoov hmoov ntawm HEC.
Environmental Impact: Thaum HEC nws tus kheej yog biodegradable thiab ib puag ncig zoo, cov txheej txheem tsim khoom thiab pov tseg ntawm HEC-muaj cov khoom yuav muaj kev cuam tshuam ib puag ncig. Kev siv zog yuav tsum tau ua kom txo qis pov tseg thiab cov pa phem cuam tshuam nrog kev tsim khoom, siv, thiab pov tseg cov khoom siv HEC.
Cov koom haum tswj hwm xws li US Food and Drug Administration (FDA), European Food Safety Authority (EFSA), thiab Cosmetic Ingredient Review (CIR) Expert Panel tau soj ntsuam kev nyab xeeb ntawm HEC thiab tau pom tias nws muaj kev nyab xeeb rau nws cov kev npaj siv nyob rau hauv kev teev tseg. concentrations. Txawm li cas los xij, nws yog ib qho tseem ceeb rau cov tuam txhab lag luam kom ua raws li cov kev cai tswj hwm thiab xyuas kom zoo thiab kev nyab xeeb ntawm lawv cov khoom los ntawm kev ntsuas tsim nyog thiab kev tswj xyuas zoo.
hydroxyethyl cellulose feem ntau suav hais tias muaj kev nyab xeeb rau kev siv ntau yam kev lag luam thaum siv kom tsim nyog thiab nyob rau hauv cov lus qhia. Txawm li cas los xij, ib yam li txhua yam tshuaj lom neeg, kev tuav kom zoo, khaws cia, thiab kev coj ua pov tseg yuav tsum tau ua raws li kom txo qis kev pheej hmoo rau tib neeg kev noj qab haus huv thiab ib puag ncig. Cov tib neeg uas muaj kev txhawj xeeb tshwj xeeb txog HEC lossis cov khoom uas muaj HEC yuav tsum sab laj nrog cov kws kho mob lossis cov thawj coj tswj hwm rau cov lus qhia ntawm tus kheej.
Post lub sij hawm: Mar-13-2024