48 CFR · Federal Acquisition Regulation and Defense supplement

FAR and DFARS navigator

The codified text (eCFR, as of 2026-10-02). Under the Revolutionary FAR Overhaul ↗, agencies follow class deviations with new text for many parts while the formal rules go through the Federal Register: check the solicitation and your contract's clauses, which rule.

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3 sections with “Toxic chemical”

  • FAR 52.223-5 Pollution Prevention and Right-to-Know Information.
    …ntion and Right-to-Know Information (MAY 2024) (a) Definitions. As used in this clause— Toxic chemical means a chemical or chemical category listed in 40 CFR 372.65. (b) Federal facilities are required to comply with the provisions of th…
  • FAR 23.001 Definitions.
    …ide, hydrofluorocarbons, perfluorocarbons, nitrogen trifluoride, or sulfur hexafluoride. Toxic chemical means a chemical or chemical category listed in 40 CFR 372.65.
  • FAR 52.223-20 Aerosols.
    …h as— (1) In-use emission rates, energy efficiency; (2) Safety, such as flammability or toxicity; (3) Ability to meet technical performance requirements; and (4) Commercial availability at a reasonable cost. (c) The Contractor shall re…

FAR (chapter 1)

DFARS (chapter 2, Defense)

Source: eCFR, 48 CFR chapters 1 and 2 (GPO GovInfo bulk data) ↗. Rule changes in progress: FAR, DFARS. Terms: glossary.