48 CFR § 523.303 - 523.303 Contract clauses.
---
identifier: "/us/cfr/t48/s523.303"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "48 CFR § 523.303 - 523.303 Contract clauses."
title_number: 48
title_name: "Federal Acquisition Regulations System"
section_number: "523.303"
section_name: "523.303 Contract clauses."
chapter_number: 5
chapter_name: "GENERAL SERVICES ADMINISTRATION"
subchapter_number: "D"
subchapter_name: "SOCIOECONOMIC PROGRAMS"
part_number: "523"
part_name: "ENVIRONMENT, ENERGY AND WATER EFFICIENCY, RENEWABLE ENERGY TECHNOLOGIES, OCCUPATIONAL SAFETY, AND DRUG-FREE WORKPLACE"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "40 U.S.C. 121(c)."
regulatory_source: "64 FR 37220, July 9, 1999, unless otherwise noted."
cfr_part: "523"
---
# 523.303 523.303 Contract clauses.
(a) Insert the clause at 552.223-70, Hazardous Substances, in solicitations and contracts for packaged items subject to the Federal Hazardous Substances Act and the Hazardous Materials Transportation Act.
(b) Insert the clause at 552.223-71, Nonconforming Hazardous Materials, in solicitations and contracts for supplies that contain hazardous materials.
(c) Insert the clause at 552.223-73, Preservation, Packaging, Packing, Marking and Labeling of Hazardous Materials (HAZMAT) for Shipments, in solicitations and contracts for packaged items containing hazardous materials.
[64 FR 37220, July 9, 1999, as amended at 80 FR 36248, June 24, 2015; 86 FR 55520, Oct. 6, 2021]