Battery and coatings chemicals get a new EPA review gate

In a federal proposal, EPA is asking chemical companies to pause before they launch certain new uses of substances that have already come through the agency’s review process. The rule would apply to chemicals that were the subject of premanufacture notices, or PMNs, and are also covered by an EPA order under the Toxic Substances Control Act, or TSCA.

If a company wants to manufacture, import or process one of those substances for a use EPA has identified as significant, it would have to notify the agency at least 90 days before starting. That notice would not amount to a ban. It would work more like a checkpoint, giving EPA time to review the planned activity before it reaches a plant, a warehouse or a customer.

How the notice rule would work

The idea behind a significant new use rule, or SNUR, is straightforward. EPA decides that a new activity should not begin quietly. The agency wants advance warning so it can look at the risks before the first shipment or production run starts. That is especially important when a chemical is moving from one defined use to another, or when a company wants to change the way it makes or handles the substance.

EPA says these rules are meant to make sure all manufacturers and processors, not just the company that first submitted the notice, are held to the same standard. In plain terms, that means the agency is not only looking at the original approval path. It is also trying to keep later users from stepping around the limits that were built into the earlier order.

The proposal is also aimed at timing. EPA can review a proposed use while it is still on paper. That gives the agency room to ask how the substance will be made, imported, processed, distributed or disposed of, and whether the planned work fits within the protections already attached to the chemical.

The kinds of uses EPA is watching

The chemicals covered by the proposal are tied to a range of industrial uses. In the notices, some were described as components in high-performance batteries or as additives used in battery manufacture. Others were described as plastic and rubber additives, additives for paving applications, ingredients in packaging, coatings and adhesives, rigid insulation materials, oil drilling fluids, display materials, photoresist, microlithography for electronic device manufacture, rubber accelerators, chemical intermediates, and materials for gas adsorption cartridges and protective garments.

That range matters because it shows how far the proposal could reach across the supply chain. A substance may be used in a factory, but it may also travel into battery parts, insulation, electronics, or packaging materials before it ever reaches a finished product. EPA is treating those shifts in use as the point where a fresh review may be needed.

Some of the substances are also described by EPA as potentially persistent, bioaccumulative and toxic, often shortened to PBT. In plain language, that means the agency believes some of them may stay in the environment for a long time and build up in living things. For some of the substances, EPA estimates they could persist for more than six months and have a strong tendency to accumulate.

Protective measures are part of the rule

This proposal is not just about what a chemical is used for. It is also about how it is handled. EPA says many of the protected uses depend on safety measures already built into the underlying TSCA orders. Those measures include engineering controls, respirators, limits on air exposure, and restrictions on release to water.

In several cases, the proposed significant new uses are defined by the absence of those safeguards. EPA says it would treat as significant new uses things like manufacturing, processing or use without a National Institute for Occupational Safety and Health, or NIOSH, certified respirator when inhalation exposure is possible. The agency also points to uses that would release the substance, or waste containing it, to water, or that would allow the substance to be used in a consumer product.

Other conditions are equally specific. EPA says it would consider it a significant new use to process the substance in a way that creates vapor, dust, mist or aerosol in an open process. It also flags spray applications, uses that cause surface water concentrations to exceed certain limits, and disposal that does not meet the required hazardous waste incineration standard. In some cases, the rule would require waste streams to be captured and routed through controls that achieve very high destruction efficiency.

Those details show the agency is drawing the line around exposure, not just around product labels. If a company wants to use the substance in a different setting, it would need to be ready to show how workers, water and waste will be handled.

Importers, exporters and downstream users are inside the fence

Companies that import these substances are directly covered, because TSCA defines manufacture to include import. That means the rule would not only affect chemical plants in the United States. It would also affect firms that bring the substances into the country and then sell them into domestic production chains.

EPA also says the proposal may sit alongside other TSCA duties, including import certification and export notification requirements. For businesses that move chemicals across borders, that can mean more than one compliance screen at the same time. A company may need to think about the notice requirement, border paperwork and any other obligations that come with shipping the substance in or out of the country.

That matters because a company can touch the chemical without ever making it from scratch. An importer can be the first U.S. holder of the material. A processor can change how the substance is handled downstream. Under this proposal, both would have to treat a covered new use as something that needs EPA review before it begins.

The practical effect is more planning time. A reformulation, a shift in handling conditions or a new import stream could all require a company to stop and ask whether the change crosses into significant new use territory.

What companies would need to build into their plans

For regulated businesses, the proposal would add a front-end compliance step rather than an outright prohibition. That does not make it simple. It means a company would have to identify whether its planned activity falls within the covered uses, decide whether the existing safeguards still apply, and then build the notice period into production schedules and supply contracts.

EPA says a company that files a significant new use notice would face user fees, with a lower fee for small businesses. The agency also ties some of these rules to the underlying test and control conditions in the earlier orders, which means the compliance picture can change depending on how the substance is handled and what protective measures are already on the books.

For the public, the significance is less about one chemical and more about the process. EPA is trying to catch a new use before it becomes routine. For companies, that can mean more paperwork and longer lead times. For workers and nearby communities, it means the agency wants a chance to review potential exposures before the next stage of use begins.

The proposal does not say these chemicals can never be used again. It says some new uses should not start until EPA has a chance to review them. That is the central change, and it would apply across manufacturing, import and processing.