US EPA Imposes SNURs on Specific New Chemical Substances (Potentially Nanomaterials), Mandating 90-Day Pre-Manufacture Notification

GovInfo (U.S. Environmental Protection Agency) USA

Overview

The U.S. Environmental Protection Agency (EPA) has announced the application of Significant New Use Rules (SNURs) for certain chemical substances, potentially including nanomaterials, via the Federal Register. This regulation mandates that entities intending to manufacture or process these substances for “significant new uses” must notify the EPA 90 days prior to commencing activities. This measure is crucial for proactively evaluating and managing the potential environmental and human health impacts of novel chemical substances.

In Depth

Key Findings

The U.S. Environmental Protection Agency (EPA) announced in the Federal Register on June 26, 2026, a notice regarding broad rules and regulations under the Clean Air Act. This announcement specifically includes the application of “Significant New Use Rules (SNURs)” to certain chemical substances, potentially encompassing nanomaterials. Under this regulation, any entity planning to manufacture or process these subject chemical substances for a “significant new use” is required to notify the EPA 90 days before initiating the intended activities and undergo review.

Regulatory Details & Industry Impact

SNURs are part of the Toxic Substances Control Act (TSCA) framework in the U.S., triggered when new chemical substances or new uses of existing chemicals might pose unreasonable risks to human health or the environment. This announcement could indicate a strengthening of regulations concerning novel nanomaterials with potential risks, in line with the evolution of nanotechnology. Companies must recognize this pre-manufacture notification obligation early in their planning stages and prepare necessary safety evaluations and data submissions. While this may incur additional time and costs for regulatory compliance, it also contributes to enhancing product safety and reliability.

Background & Context

Nanomaterials, while offering innovative advancements across many industries due to their unique properties, have also raised concerns regarding their environmental behavior and human health impacts due to their minute size and high reactivity. Governments and international organizations worldwide are developing regulatory frameworks to harness the benefits of these emerging technologies while appropriately managing potential risks. The EPA’s application of SNURs is part of the U.S.’s ongoing efforts to promote the responsible development and use of nanomaterials. This reiterates to companies working with nanomaterials that environmental, health, and safety (EHS) considerations are imperative alongside innovation.

Strategic Significance & Outlook

The application of this SNUR will impact companies’ business plans, R&D, and supply chains within the nanomaterials industry. Especially, companies introducing new nanomaterials or their applications to the market will need to navigate the EPA review process during the 90-day notification period, potentially affecting product launch timelines. However, in the long term, more stringent regulations are expected to enhance market transparency and trust, increasing public acceptance of nanomaterials. Companies are advised to closely monitor regulatory developments and collaborate with experts early on to develop appropriate regulatory compliance strategies.

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