---
kind: "section"
citation: "49 C.F.R. § 173.223"
title: "49"
number: "173.223"
heading: "Packagings for certain flammable solids."
url: "https://uscodex.org/cfr/49/173.223"
---

# §173.223. Packagings for certain flammable solids.

- (a) Packagings for “Musk xylene,” “5-tert-Butyl-2,4,6-trinitro-m-xylene,” “Azodicarbonamide,” or “Isosorbide-5-mononitrate,” when offered for transportation or transported by rail, highway, or vessel, must conform to the general packaging requirements of [subpart B of part 173](/cfr/49/part173-subpartB.md), and to the requirements of [part 178](/cfr/49/part178.md) of this subchapter at the Packing Group III performance level and may only be transported in the following packagings:
  - (1) Fiberboard box (4G) with a single inner plastic bag, and a maximum net mass of not more than 50 kg (110 lbs).
  - (2) Fiberboard box (4G) or fiber drum (1G), with a plastic inner packaging not exceeding 5 kg (11 lbs), and a maximum net mass of not more than 25 kg (55 lbs).
  - (3) Fiber drum (1G), and a maximum net mass of not more than 50 kg (110 lbs), that may be fitted with a coating or lining.
- (b) [Reserved]

## Notes

### Amendments

[Doc. No. 2002-13658, 68 FR 45035, July 31, 2003; 75 FR 5394, Feb. 2, 2010]

### Source

Source: Amdt. 173-224, 55 FR 52643, Dec. 21, 1990, unless otherwise noted.

### Authority

Authority: 49 U.S.C. 5101-5128, 44701; 49 CFR 1.81, 1.96 and 1.97.

### Amendments

[Doc. No. 2002-13658, 68 FR 45035, July 31, 2003; 75 FR 5394, Feb. 2, 2010]