# Nickel carbonyl.

- **operation:** document
- **citation:** 49 CFR 173.198
- **title:** Nickel carbonyl.
- **source type:** regulation
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** current
- **official:** true
- **published on:** Not available
- **effective on:** 2026-08-18
- **summary:** (a) Nickel carbonyl must be packed in specification steel or nickel cylinders as prescribed for any compressed gas except acetylene. A cylinder used exclusively for nickel carbonyl may be given a complete external visual inspection instead of the pressure test required by § 180.205 of this subchapte
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/49-cfr-173-198.json
- **markdown:** https://regulus.evalyn.ai/document/49-cfr-173-198.md
- **app url:** https://regulus.evalyn.ai/document/49-cfr-173-198
- **source url:** https://www.ecfr.gov/on/2026-08-18/title-49/section-173.198
**body:**

(a) Nickel carbonyl must be packed in specification steel or nickel cylinders as prescribed for any compressed gas except acetylene. A cylinder used exclusively for nickel carbonyl may be given a complete external visual inspection instead of the pressure test required by § 180.205 of this subchapter. Visual inspection must be in accordance with CGA Pamphlet C-6 (IBR, see § 171.7 of this subchapter).

(b) Packagings for nickel carbonyl must conform to § 173.40.

[Amdt. 173-224, 55 FR 52643, Dec. 21, 1990, as amended at 67 FR 51643, Aug. 8, 2002; 68 FR 75742, Dec. 31, 2003]
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- **body characters:** 579