49 C.F.R. § 179.220-4

Insulation.

Last amended: 2016Year: 2026Length: 25 wordsOfficial source

Cite as 49 C.F.R. § 179.220-4 (2026)

The annular space between the inner container and the outer shell must contain an approved insulation material. [Amdt. 179-9, 36 FR 21340, Nov. 6, 1971]