Consumer uses of 1,4-dioxane cleared in final TSCA risk evaluation: EPA found unreasonable risks to workers for 13 of 24 conditions of use evaluated

摘要

The US EPA has concluded that 1,4-dioxane poses an unreasonable risk to workers working directly with the solvent in more than half of the conditions of use (CoUs) evaluated. But it said the substance does not present a risk of injury to consumers, occupational non-users (ONUs), bystanders or the environment. The finalised TSCA risk evaluation – released on 31 December – incorporates both the agency’s June 2019 draft findings of dermal and inhalation risks to workers, as well as its supplemental findings from November that 1,4-dioxane does not present a risk to the general population when present as a byproduct in certain consumer items, uses that were excluded from the draft review.