---
kind: "unit"
title: "40"
title_heading: "Protection of Environment"
key: "chI/subchR"
level: "subchap"
label: "Subchapter R"
heading: "Toxic Substances Control Act"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/40/chI-subchR"
sections_count: 3383
---

# Subchapter R — Toxic Substances Control Act

Title 40 C.F.R. — Protection of Environment › Chapter I — Environmental Protection Agency

## Contents

- [Part 700 — General](/cfr/40/chI-subchR-part700.md)
- [Part 702 — General Practices and Procedures](/cfr/40/chI-subchR-part702.md)
- [Part 703 — Confidentiality Claims](/cfr/40/chI-subchR-part703.md)
- [Part 704 — Reporting and Recordkeeping Requirements](/cfr/40/chI-subchR-part704.md)
- [Part 705 — Reporting and Recordkeeping Requirements for Certain per- and Polyfluoroalkyl Substances](/cfr/40/chI-subchR-part705.md)
- [Part 707 — Chemical Imports and Exports](/cfr/40/chI-subchR-part707.md)
- [Part 710 — Compilation of the Tsca Chemical Substance Inventory](/cfr/40/chI-subchR-part710.md)
- [Part 711 — Tsca Chemical Data Reporting Requirements](/cfr/40/chI-subchR-part711.md)
- [Part 712 — Chemical Information Rules](/cfr/40/chI-subchR-part712.md)
- [Part 713 — Reporting Requirements for the Tsca Inventory of Mercury Supply, Use, and Trade](/cfr/40/chI-subchR-part713.md)
- [Part 716 — Health and Safety Data Reporting](/cfr/40/chI-subchR-part716.md)
- [Part 717 — Records and Reports of Allegations That Chemical Substances Cause Significant Adverse Reactions to Health or the Environment](/cfr/40/chI-subchR-part717.md)
- [Part 720 — Premanufacture Notification](/cfr/40/chI-subchR-part720.md)
- [Part 721 — Significant New Uses of Chemical Substances](/cfr/40/chI-subchR-part721.md)
- [Part 722 — Part 722 [reserved]](/cfr/40/chI-subchR-part722.md)
- [Part 723 — Premanufacture Notification Exemptions](/cfr/40/chI-subchR-part723.md)
- [Part 725 — Reporting Requirements and Review Processes for Microorganisms](/cfr/40/chI-subchR-part725.md)
- [Part 745 — Lead-Based Paint Poisoning Prevention in Certain Residential Structures](/cfr/40/chI-subchR-part745.md)
- [Part 747 — Metalworking Fluids](/cfr/40/chI-subchR-part747.md)
- [Part 749 — Water Treatment Chemicals](/cfr/40/chI-subchR-part749.md)
- [Part 750 — Procedures for Rulemaking under Section 6 of the Toxic Substances Control Act](/cfr/40/chI-subchR-part750.md)
- [Part 751 — Regulation of Certain Chemical Substances and Mixtures under Section 6 of the Toxic Substances Control Act](/cfr/40/chI-subchR-part751.md)
- [Part 761 — POLYCHLORINATED BIPHENYLS (PCBs) MANUFACTURING, PROCESSING, DISTRIBUTION IN COMMERCE, AND USE PROHIBITIONS](/cfr/40/chI-subchR-part761.md)
- [Part 763 — Asbestos](/cfr/40/chI-subchR-part763.md)
- [Part 766 — Dibenzo-Para-Dioxins/dibenzofurans](/cfr/40/chI-subchR-part766.md)
- [Part 767-769 — Parts 767-769 [reserved]](/cfr/40/chI-subchR-part767-769.md)
- [Part 770 — Formaldehyde Standards for Composite Wood Products](/cfr/40/chI-subchR-part770.md)
- [Part 771-789 — Parts 771-789 [reserved]](/cfr/40/chI-subchR-part771-789.md)
- [Part 790 — Procedures Governing Testing Consent Agreements and Test Rules](/cfr/40/chI-subchR-part790.md)
- [Part 791 — Data Reimbursement](/cfr/40/chI-subchR-part791.md)
- [Part 792 — Good Laboratory Practice Standards](/cfr/40/chI-subchR-part792.md)
- [Part 795 — Provisional Test Guidelines](/cfr/40/chI-subchR-part795.md)
- [Part 796 — Chemical Fate Testing Guidelines](/cfr/40/chI-subchR-part796.md)
- [Part 797 — Environmental Effects Testing Guidelines](/cfr/40/chI-subchR-part797.md)
- [Part 798 — Health Effects Testing Guidelines](/cfr/40/chI-subchR-part798.md)
- [Part 799 — Identification of Specific Chemical Substance and Mixture Testing Requirements](/cfr/40/chI-subchR-part799.md)