40 CFR Part 751 (Regulatory Citation)

The CFR section codifying TSCA Section 6 chemical regulations. Subpart E contains all PBT provisions: § 751.401 (General), § 751.403 (Definitions), § 751.405 (DecaBDE), § 751.407 (PIP 3:1), § 751.409 (2,4,6-TTBP), § 751.411 (PCTP), § 751.413 (HCBD).

40 CFR Part 751; eCFR (updated January 29, 2026).

This is the primary compliance reference. Maintain current copies via eCFR.gov. When responding to audits, cite specific sections (e.g., § 751.407(b)(1) for PIP 3:1 circuit board exclusion).

A compliance officer cites § 751.407(b)(1) in a customer response documenting the circuit board permanent exclusion.