The U.S. Department of Defense (DoD) has issued a Request for Information (RFI) to identify critical applications of certain chemicals undergoing risk evaluations under TSCA Section 6. This move signals potential future restrictions that could affect global chemical suppliers, importers, and distributors serving the defense industrial base. Overseas chemical buyers should monitor this development closely to anticipate compliance shifts and supply chain adjustments.
Background and purpose
On May 27, 2025, the DoD published an RFI to gather data on chemicals currently under TSCA Section 6 risk evaluations. The goal is to assess which applications are critical for DoD operations and the broader Defense Industrial Base. This information will help the DoD understand how these chemicals are used in products that enter the defense supply chain.
Chemicals under scrutiny
The RFI specifically targets a list of chemicals, including 1,3-butadiene, 1,1-dichloroethane, 1,2-dichloroethane, and several phthalates such as BBP, DBP, DCHP, DEHP, DIBP, DIDP, and DINP. Also included is octamethylcyclotetrasiloxane (D4). These substances are widely used in industrial applications, including adhesives, coatings, plastics, and sealants, which may be relevant to chemical formulators and distributors.
What buyers should watch
Chemical buyers supplying the U.S. defense sector should review their product portfolios for the listed chemicals. The DoD is seeking information on both the necessity of these chemicals in specific applications and their criticality to industry. Suppliers may need to provide data on alternative substances or processes. The comment deadline is June 13, 2025, and the full RFI with CASRNs is available on SAM.gov.
Compliance and logistics signals
This RFI is part of a broader trend under TSCA Section 6, where the U.S. Environmental Protection Agency evaluates existing chemicals for potential restrictions. The DoD's involvement indicates that defense-related exemptions or phase-outs may be negotiated. Importers and distributors should prepare for possible supply chain disruptions or new documentation requirements for chemicals on this list.
China sourcing context
While the RFI focuses on U.S. defense applications, many of the listed chemicals are produced in significant volumes in China. Chinese manufacturers of phthalates, butadiene, and siloxanes should monitor how U.S. regulatory developments may affect export demand. Proactive engagement with U.S. buyers on compliance data could provide a competitive advantage.
Source: Read the original report | Published: June 04, 2025