On 12 Oct, 2018, South Korea National Institute of Environmental Research (NIER) published by NIER Announcement No.2018-42 a batch of 15 chemicals (given No. 2018-1-855 to 2018-1-869) that are newly designated as toxic chemical substances. In addition, the chemical names of two toxic chemical substances (Given No. 2017-1-774, 2018-1-829) were updated. The concentration threshold of one toxic chemical substance (Given No. 2017-1-789) in mixture was updated from 25% to 5%. The updates came into effective immediately. Please download the updated details of substances here.