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.