Lub Koom Haum Saib Xyuas Kev Tiv Thaiv Ib puag ncig hauv Tebchaws Meskas (EPA) tau tshaj tawm tias nws tau nqis tes tawm tsam dichloromethane, uas tuaj yeem siv los tshem tawm cov xim. Lautenberg chemical Safety rau 21st xyoo pua txoj cai lij choj, tau hloov kho Txoj Cai Tswj Tshuaj Toxic (TSCA), xav kom epa ntawm kev siv 10 yam tshuaj tshwj xeeb, suav nrog kev ntsuas kev pheej hmoo ntawm dichloromethane. EPA tab tom ua tiav cov kev daws teeb meem rau thawj 10 chemicals.In 2014, THE EPA tau hais txog kev siv dichloromethane rau kev tshem tawm cov xim hauv nws qhov kev ntsuam xyuas kev pheej hmoo, thiab thaum Lub Ib Hlis 2017, Lub Chaw Haujlwm tau pom zoo kom txwv tsis pub neeg siv khoom thiab kev lag luam siv dichloromethane. rau kev tshem tawm cov xim. Thaum Lub Rau Hli 2017, EPA tau tshaj tawm tias nws yuav tsis rov ntsuas qhov kev tshem tawm cov xim siv methylene chloride.
EPA tshaj tawm peb qhov hloov tshiab raws li nws txoj haujlwm dhau los. EPA npaj siab ua kom tiav txoj cai dichloromethane. Lub koom haum tsis tau rov ntsuam xyuas cov xim tshem tawm ntawm kev siv dichloromethane, tso siab rau nws qhov kev ntsuam xyuas kev pheej hmoo yav dhau los, thiab tab tom ua haujlwm los tshaj tawm txoj cai kawg rau OMB.Nws tau nkag siab tias dichloromethane rau cov kua tsis muaj xim, hauv kev lag luam tshuaj raws li cov tshuaj tiv thaiv nruab nrab, siv. rau kev npaj ntawm ampicillin, hydroxybenzylpenicillin thiab pioneer amycin; Dichloromethane muaj qhov zoo ntawm solubility muaj zog thiab tsis muaj tshuaj lom. Nws yog dav siv hauv kev tsim cov yeeb yaj kiab zoo thiab polycarbonate, thiab cov seem yog siv los ua cov txheej txheem txheej, hlau degreaser, cov pa luam yeeb tshuaj tua kab mob, polyurethane foaming tus neeg saib xyuas, tso tawm tus neeg sawv cev thiab cov xim tshem tawm.
