FAR and DFARS › DFARS Part 223: Environment, Sustainable Acquisition, and Material Safety › Subpart 223.73
DFARS 223.7303 Prohibition.
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.
In plain English
This DFARS section prohibits contracts from including specifications or standards that would result in deliverables or construction materials containing more than 0.1 percent hexavalent chromium by weight in any homogeneous material, where proven substitutes with acceptable performance exist. It matters to contractors because it restricts the materials they can deliver or use on covered contracts, and it applies in addition to Clean Air Act requirements regardless of where performance occurs.
Applies to: Contracts subject to DFARS and their deliverables or construction materials
What it requires
- Do not include a specification or standard that results in a deliverable or construction material containing more than 0.1 percent hexavalent chromium by weight in any homogeneous material where proven substitutes providing acceptable performance are available
Key terms: hexavalent chromium · homogeneous material · deliverable · construction material · proven substitutes
Written by AI from this section's text. A guide, not legal advice: the text below rules.
The text
(a) Except as provided in 223.7304 and 223.7305, no contract may include a specification or standard that results in a deliverable or construction material containing more than 0.1 percent hexavalent chromium by weight in any homogeneous material in the deliverable or construction material where proven substitutes are available that provide acceptable performance for the application.
(b) This prohibition is in addition to any imposed by the Clean Air Act regardless of the place of performance.
← 223.7302 [Reserved] · 223.7304 Exceptions. →
Rule changes for DFARS Part 223
- Defense Federal Acquisition Regulation Supplement: Disclosure of Greenhouse Gas Emissions (DFARS Case 2024-D021) ↗ · final rule 2026-05-07 · effective 2026-05-07
- Defense Federal Acquisition Regulation Supplement: Sustainable Procurement (DFARS Case 2024-D024) ↗ · final rule 2024-08-15 · effective 2024-08-15
- Defense Federal Acquisition Regulation Supplement: Replacement of Fluorinated Aqueous Film-Forming Foam (DFARS Case 2020-D011) ↗ · final rule 2024-03-26 · effective 2024-03-26
Source: eCFR, 48 CFR chapters 1 and 2 (GPO GovInfo bulk data) ↗. Plain words for the terms: glossary.