Aerosol products carried on board an aircraft in checked baggage for business purposes
Pipeline and Hazardous Materials Safety Administration · Jul 12, 2007 · Reference No. 07-0091
Interprets: 49 CFR § 175.10(a)(1)
Reggie’s quick take
A company employee asked whether sample aerosol products, classed as Division 2.2 with no subsidiary hazard, can be carried in checked baggage on an aircraft for business purposes under the exception in § 175.10(a)(1)(ii), as long as the quantity limits in § 175.10(a)(1)(iii) are met. PHMSA said yes. These non-flammable aerosols may go in checked baggage only, and the release devices must be protected by a cap or other suitable means to prevent accidental release. The letter also says flammable aerosols that are not medicinal or toilet articles for personal use are not allowed in checked or carry-on baggage.
Written by AI (Claude) on Oct 22, 2026. Robots make mistakes and leave things out, so the letter below is what counts. Not legal advice.
This is in response to your letter dated May 4, 2007 requesting clarification of the Hazardous Materials Regulations (HMR; 49 CFR Parts 171-180) requirements applicable to sample aerosol products classed as Division 2.2 with no subsidiary hazard carried on board an aircraft in checked baggage for business purposes. Specifically, you ask if an employee carrying company products may utilize the exception provided in § 175.10(a)(1)(ii) for these products provided the quantity limitations in § 175.10(a)(1)(iii) are met.
The answer is yes. As provided by § 175.10(a)(1)(ii), aerosols of Division 2.2, with no subsidiary hazard meeting the quantity limits of paragraph (a)(1)(iii) may be carried in checked baggage only. Release devices on aerosols must be protected by a cap or other suitable means to prevent inadvertent release. Flammable aerosols that are not medicinal or toilet articles for personal use are not permitted in checked or carry-on baggage.
A letter of interpretation applies the regulations to the facts the requester described. It isn’t a regulation and isn’t legal advice. The agency’s copy.