Overview
TSCA is the central chemicals law in the United States. The Environmental Protection Agency runs it, and the law reaches industrial and commercial chemicals across most sectors. The 1976 law was significantly amended by the Frank R. Lautenberg Chemical Safety for the 21st Century Act of 2016, which gave EPA stronger authority: mandatory risk evaluation and prioritization of existing chemicals, a risk-based safety standard, and review of new chemicals before they enter the market. People often call it the rough US counterpart to REACH, but the two systems work quite differently.
TSCA rests on three pillars. It keeps an Inventory of existing chemicals, requires notice before a new chemical reaches the market, and lets EPA restrict substances that pose an unreasonable risk.
What it covers
The TSCA Inventory is the master list of chemicals already in US commerce. A substance on the Inventory counts as existing; anything not on it counts as new. To make or import a new chemical, a company files a pre-manufacture notice, which gives EPA the chance to review the substance and set conditions before it goes into use.
Section 6 holds the power to act on chemicals already in use. When EPA finds that a substance presents an unreasonable risk, it can restrict or ban specific uses. It has used this power on certain persistent, bioaccumulative and toxic substances, including PIP (3:1), and on methylene chloride.
PFAS reporting
PFAS carry specific duties under Section 8, which deals with reporting and recordkeeping. Companies that have made or imported these substances face obligations to report data on them, part of a wider push to map where PFAS sit across US supply chains.
How it compares to REACH
The two laws share a goal of controlling chemical risk, yet they split the work differently between government and industry.
How it relates to other topics
- REACH is the EU system most often set against TSCA.
- California Proposition 65 adds a state-level warning duty on top of federal law.
- PFAS face reporting duties under Section 8.
- The EPA is the agency that administers the law.
Note: general educational information, not legal advice. Check the official source before relying on it.