Ntau cov khoom ntim dej haus hauv kev ua lag luam tam sim no yog qhov nyuaj kom ua tau raws li lub teb chaws cov zaub mov kev nyab xeeb thiab ib puag ncig, qhov teeb meem tseem ceeb suav nrog benzene tshaj kev sib tw, kab mob, cov hlau hnyav, thiab lwm yam.
Benzene yog ib yam khoom muaj zog carcinogenic, piv txwv li, feem ntau nyob rau hauv cov coatings, adhesives, dav siv nyob rau hauv zus tau tej cov zaub mov ntim.
Vim tias ntau lub tuam txhab tsis muaj kev tswj hwm thiab kev tshawb pom txhais tau tias, cov khoom ntim khoom noj yog cov benzene tiag tiag tshaj qhov kev sib tw.
Cov khoom ntim tsis tsim nyog tuaj yeem ua rau cov zaub mov tsis huv, thiab ua rau muaj kev phom sij rau cov neeg siv khoom noj.
Cov kuab tshuaj residual cov kuab tshuaj residual composite ntim feem ntau tsim nyob rau hauv cov luam ntawv number case, hnyav thiab cov txheej txheem ntau lawm, feem ntau siv cov kuab tshuaj xws li toluene thiab butanone, ethyl acetate.
GB9683—
1988 complex compounds, nws tus kheej tsis yog decomposition, digestion thiab nqus nyob rau hauv lub cev kuj tsis yog, thiab yog li ntawd nws yog suav tias yog ib tug muaj kev ruaj ntseg, tsis muaj tshuaj lom packing khoom.
tab sis vim yog qhov xav tau ntawm kev ua tiav, uas feem ntau koom nrog ntau yam khoom siv ntxiv, xws li kev txhawb nqa tus neeg saib xyuas, tus neeg saib xyuas kev tiv thaiv, tus neeg sawv cev filling, coj teeb meem kev nyab xeeb khoom noj.
Synthetic roj hmab yog tsuas yog muab los ntawm cov roj chemical raw cov ntaub ntawv, txheeb yog ntau, yog tsim los ntawm monomer los ntawm ntau yam txheej txheem ntawm polymer tebchaw, dawb me me molecules muaj teeb meem rau tib neeg lub cev.
