CFR > Title 41 - Public Contracts and Property Management > SUBTITLE B—Other Provisions Relating to Public Contracts > CHAPTER 50—PUBLIC CONTRACTS, DEPARTMENT OF LABOR (parts 50-201 to 50-210) > PART 50-204—SAFETY AND HEALTH STANDARDS FOR FEDERAL SUPPLY CONTRACTS > SUBPART D—Gases, Vapors, Fumes, Dusts, and Mists (§50-204.50 to §50-204.72) > 50-204.69—Nitrous oxide.