For substances not listed on the TSCA list, i.e. new substances, if the exemption conditions are not met, the manufacturer or importer of the substance must make a PMN (pre-manufacturing) declaration. For "existing substances", companies need to focus on two control requirements of the Signif...
The firm, which says it has "mixed views" on the rule overall, agrees with EPA's decision not to specifically list individual PFAS but rather use a structural definition that "may allow EPA to gather critical information about substances that are known to be manufactured (such as byproducts)...