Regulation of Persistent, Bioaccumulative, and Toxic Chemicals Under TSCA Section 6(h); Extension of Comment Period

In the Federal Register of July 29, 2019, EPA proposed a rule concerning certain persistent, bioaccumulative, and toxic chemicals identified pursuant to section 6(h) of the Toxic Substances Control Act (TSCA). These five chemicals are: decabromodiphenyl ether; phenol, isopropylated phosphate (3:1), also known as tris(4-isopropylphenyl) phosphate; 2,4,6-tris(tert-butyl)phenol; hexachlorobutadiene; and pentachlorothiophenol. The proposed rule, if finalized, would restrict or prohibit manufacture (including import), processing, and distribution in commerce for many uses of four of these five chemical substances. EPA evaluated the uses of hexachlorobutadiene and proposed no regulatory action. For the other four, the proposal included recordkeeping requirements. Additional downstream notification requirements were proposed for phenol, isopropylated phosphate (3:1). This document extends the comment period for 31 days, from September 27, 2019, to October 28, 2019.