TSCA Chemical Substance Inventory

EPA's complete list of existing chemicals manufactured, processed or imported in the United States, each row carrying commercial activity status flags (active or inactive).

The July 2026 snapshot lists about 86,741 substances and is refreshed roughly every six months.

In this catalog it appears concretely: - EPA TSCA Chemical Substance Inventory — "estimated_size "~86,741 listed substances (42,698 active + 44,043 inactive in the 07/2026 release)"". - tsca, chemical inventory, cas registry, regulatory status, compliance screening, active chemicals. - EPA ChemView aggregates — "TSCA chemical health and safety studies, regulatory actions, use and exposure information".

Conventions decide whether two sources can be joined at all. Buy one side of an analysis that ignores this convention and every reconciliation step — calendar alignment, unit conversion, entity matching — lands on your team instead of the vendor's.

The failure mode is concrete: the label appears in a listing, the delivered files tell a different story, and the gap surfaces mid-project when fixing it is most expensive.

You rarely have to take a vendor's word for it. 82.4% of the 1,744 datasets Datadory catalogs are free to access, and EPA TSCA Chemical Substance Inventory lets you inspect the real artifact before any budget is committed.

Treat every claim of this attribute as testable:

1. Open EPA TSCA Chemical Substance Inventory and confirm its record — "estimated_size "~86,741 listed substances (42,698 active + 44,043 inactive in the 07/2026 release)"" — against the files you actually receive. 2. Open tsca, chemical inventory, cas registry, regulatory status, compliance screening, active chemicals and compare its listing against the delivered artifact before paying for a commercial equivalent. 3. Open EPA ChemView aggregates and confirm its record — "TSCA chemical health and safety studies, regulatory actions, use and exposure information" — against the files you actually receive. 4. Pin down update cadence in writing.

Adjacent concepts worth reading next: - CAS Registry Number - chemical data reporting - confidential business information - REACH (EU chemicals regulation)