EPA chuan Toxic Substances Control Act (TSCA) hnuaiah dichloromethane (dichloromethane emaw DCM tia hriat bawk) hman tam zawk khapna tur ruahmanna siam a tichhuak. Dichloromethane hi chemical a ni a, industry leh sumdawnna atana hmanraw hrang hrang a awm a. Industry hrang hranga hman thin solvent a ni. Chemical dang siam nan pawh hman a ni a, refrigerant thenkhat pawh a tel. Industry a nghawngte chu:
TSCA Section 6(a) hnuaia thuneihna a neih angin EPA chuan dichloromethane hian hriselna emaw boruak emaw tan hlauhawm lo tak a thlen tih a rel a ni. Chumi chhanna atan chuan EPA chuan May 3, 2023 khan dan siam tura rawtna a siam a: (1) consumer hman tur methylene chloride siam, siam leh sem chhuah khap a, (2) industrial-a methylene chloride hman tam zawk khap a ni. EPA-in dan siam tura ruahmanna a siamah hian FAA, NASA leh Department of Defense bakah refrigerant siamtu ṭhenkhatte chu methylene chloride hman chhunzawm theih a ni ang. Heng dilna la awmte tan hian dan siam tum hian hnathawhna hmunah hian hnathawkte nena inzawmna tihtlem nan control khauh tak a siam dawn a ni.
EPA chuan he dan hian United States-a kum khata methylene chloride hman zat a chanve aia tam a nghawng dawn niin a chhut. Thla 15 chhungin dichloromethane siam chhuah, processing, distribution leh hman dan tihtawp tura rawtna siam a ni. Tun hnaia EPA-in persistent, bioaccumulative leh toxic chemical (PBT) thenkhat a tihbo dan ang bawkin, methylene chloride tihtawp hun rei zawk hi industry thenkhat mamawh phuhrukna atan a tawk lo mai thei a, chuvangin dan zawm chungchangah harsatna engemaw zat a siam thei bawk. A tlem berah chuan, he dan siam tum hian thil siamchhuah leh supply chain chungchangah nghawng zau tak a nei thei a, hei hi company-te chuan methylene chloride hman dan an zirchiang a, a danglamna tur remchang an zawng a ni.
EPA hian July 3, 2023 hmain he dan siam tum chungchangah hian ngaihdan a dawng dawn a, a nghawngtu industry-te chuan an zawm theihna chungchangah ngaihdan pek an ngaihtuah tur a ni a, supply chain tihbuai theihna leh dan bawhchhiatna dangte pawh a tel.
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