EPA recently issued a test order under TSCA section 4 to select companies requiring that they develop and submit certain information on 6:2 fluorotelomer sulfonamide betaine, a PFAS. The order is part of the Agency’s National PFAS Testing Strategy which will evaluate a large number of PFAS for potential human and ecological effects as “most PFAS lack data for robustly characterizing their potential toxicity.
The test order was issued to Chemours Company, DuPont De Nemours Inc., National Foam Inc., and Johnson Controls Inc. 6:2 fluorotelomer sulfonamide betaine is used to make commercial firefighting foam and certain floor finishes. The test order explains that EPA found insufficient data on 6:2 fluorotelomer sulfonamide betaine to determine or predict the effects on human health specifically by the inhalation route. The order applies a tiered testing strategy. EPA has ordered the companies to generate of data on certain physical-chemical properties (e.g., density, particle size, hydrolysis as a function of pH). The Agency will use those data to determine whether further testing (e.g., inhalation toxicokinetic study, acute inhalation study) is needed. Under TSCA section 4(a)(4), EPA is required to employ a tiered screening and testing process under which the results of screening-level tests or assessments of available information inform the decision as to whether additional tests are necessary.
EPA intends to issue additional test orders to other PFAS manufacturers in the coming months. A detailed overview of the activities involved in issuing a TSCA Section 4 order can be found here.