---
kind: "section"
citation: "49 C.F.R. § 172.402"
title: "49"
number: "172.402"
heading: "Additional labeling requirements."
url: "https://uscodex.org/cfr/49/172.402"
---

# §172.402. Additional labeling requirements.

- (a) **Subsidiary hazard labels.** Each package containing a hazardous material—
  - (1) Shall be labeled with primary and subsidiary hazard labels as specified in column 6 of the [§ 172.101](/cfr/49/172.101.md) table (unless excepted in [paragraph (a)(2)](#a-2) of this section); and
  - (2) For other than Class 1 or Class 2 materials (for subsidiary labeling requirements for Class 1 or Class 2 materials see [paragraph (e)](#e) or paragraphs [(f)](#f) and [(g)](#g), respectively, of this section), if not already labeled under [paragraph (a)(1)](#a-1) of this section, shall be labeled with subsidiary hazard labels in accordance with the following table:
- (b) **Display of hazard class on labels.** The appropriate hazard class or division number must be displayed in the lower corner of a primary hazard label and a subsidiary hazard label.
- (c) **Cargo Aircraft Only label.** Each person who offers for transportation or transports by aircraft a package containing a hazardous material which is authorized on cargo aircraft only shall label the package with a CARGO AIRCRAFT ONLY label specified in [§ 172.448](/cfr/49/172.448.md) of this subpart.
- (d) **Class 7 (Radioactive) Materials.** Except as otherwise provided in this paragraph, each package containing a Class 7 material that also meets the definition of one or more additional hazard classes must be labeled as a Class 7 material as required by [§ 172.403](/cfr/49/172.403.md) and for each additional hazard.
  - (1) A subsidiary label is not required for a package containing material that satisfies all of the criteria in [§ 173.4](/cfr/49/173.4.md), [§ 173.4a](/cfr/49/173.4a.md), or [§ 173.4b](/cfr/49/173.4b.md) applicable to the subsidiary hazard class.
  - (2) Each package or overpack containing fissile material, other than fissile-excepted material (see [§ 173.453](/cfr/49/173.453.md) of this subchapter) must bear two FISSILE labels, affixed to opposite sides of the package or overpack, which conforms to the figure shown in [§ 172.441](/cfr/49/172.441.md); such labels, where applicable, must be affixed adjacent to the labels for radioactive materials.
- (e) **Class 1 (explosive) Materials.** In addition to the label specified in column 6 of the [§ 172.101](/cfr/49/172.101.md) table, each package of Class 1 material that also meets the definition for:
  - (1) Division 6.1, Packing Groups I or II, shall be labeled POISON or POISON INHALATION HAZARD, as appropriate.
  - (2) Class 7, shall be labeled in accordance with [§ 172.403](/cfr/49/172.403.md) of this subpart.
- (f) **Division 2.2 materials.** In addition to the label specified in column 6 of the [§ 172.101](/cfr/49/172.101.md) table, each package of Division 2.2 material that also meets the definition for an oxidizing gas (see [§ 171.8](/cfr/49/171.8.md) of this subchapter) must be labeled OXIDIZER.
- (g) **Division 2.3 materials.** In addition to the label specified in column 6 of the [§ 172.101](/cfr/49/172.101.md) table, each package of Division 2.3 material that also meets the definition for:
  - (1) Division 2.1, must be labeled Flammable Gas;
  - (2) Division 5.1, must be labeled Oxidizer; and
  - (3) Class 8, must be labeled Corrosive.

## Notes

### Amendments

[Amdt. 172-123, 55 FR 52594, Dec. 21, 1990, as amended at 56 FR 66255, Dec. 20, 1991; Amdt. 172-139, 59 FR 67490, Dec. 29, 1994; Amdt. 172-140, 60 FR 26805, May 18, 1995; Amdt. 172-149, 61 FR 27173, May 30, 1996; 62 FR 39405, July 22, 1997; 66 FR 33425, June 21, 2001; 69 FR 3668, Jan. 26, 2004; 74 FR 2252, Jan. 14, 2009; 76 FR 56314, Sept. 13, 2011; 79 FR 40609, July 11, 2014]

### Authority

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

### Source

Source: Amdt. 172-29, 41 FR 15996, Apr. 15, 1976, unless otherwise noted.

### Amendments

[Amdt. 172-123, 55 FR 52594, Dec. 21, 1990, as amended at 56 FR 66255, Dec. 20, 1991; Amdt. 172-139, 59 FR 67490, Dec. 29, 1994; Amdt. 172-140, 60 FR 26805, May 18, 1995; Amdt. 172-149, 61 FR 27173, May 30, 1996; 62 FR 39405, July 22, 1997; 66 FR 33425, June 21, 2001; 69 FR 3668, Jan. 26, 2004; 74 FR 2252, Jan. 14, 2009; 76 FR 56314, Sept. 13, 2011; 79 FR 40609, July 11, 2014]