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49 CFR § 172.400 - General labeling requirements. 

---
identifier: "/us/cfr/t49/s172.400"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "49 CFR § 172.400 - General labeling requirements."
title_number: 49
title_name: "Transportation"
section_number: "172.400"
section_name: "General labeling requirements."
chapter_name: "PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
subchapter_number: "C"
subchapter_name: "HAZARDOUS MATERIALS REGULATIONS"
part_number: "172"
part_name: "HAZARDOUS MATERIALS TABLE, SPECIAL PROVISIONS, HAZARDOUS MATERIALS COMMUNICATIONS, EMERGENCY RESPONSE INFORMATION, TRAINING REQUIREMENTS, AND SECURITY PLANS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "49 U.S.C. 5101-5128, 44701; 49 CFR 1.81, 1.96 and 1.97."
regulatory_source: "Amdt. 172-29, 41 FR 15996, Apr. 15, 1976, unless otherwise noted."
cfr_part: "172"
---

# 172.400 General labeling requirements.

(a) Except as specified in § 172.400a, each person who offers for transportation or transports a hazardous material in any of the following packages or containment devices, shall label the package or containment device with labels specified for the material in the § 172.101 table and in this subpart:

(1) A non-bulk package;

(2) A bulk packaging, other than a cargo tank, portable tank, or tank car, with a volumetric capacity of less than 18 m
<sup>3</sup> (640 cubic feet), unless placarded in accordance with subpart F of this part;

(3) A portable tank of less than 3785 L (1000 gallons) capacity, unless placarded in accordance with subpart F of this part;

(4) A DOT Specification 106 or 110 multi-unit tank car tank, unless placarded in accordance with subpart F of this part; and

(5) An overpack, freight container or unit load device, of less than 18 m
<sup>3</sup> (640 cubic feet), which contains a package for which labels are required, unless placarded or marked in accordance with § 172.512 of this part.

(b) Labeling is required for a hazardous material which meets one or more hazard class definitions, in accordance with column 6 of the § 172.101 table and the following table:

Table 1 to Paragraph (**b**)

| Hazard class or division | Label name | Label design
or section
reference |
| --- | --- | --- |
| 1.1 | EXPLOSIVES 1.1 | 172.411 |
| 1.2 | EXPLOSIVES 1.2 | 172.411 |
| 1.3 | EXPLOSIVES 1.3 | 172.411 |
| 1.4 | EXPLOSIVES 1.4 | 172.411 |
| 1.5 | EXPLOSIVES 1.5 | 172.411 |
| 1.6 | EXPLOSIVES 1.6 | 172.411 |
| 2.1 | FLAMMABLE GAS | 172.417 |
| 2.2 | NON-FLAMMABLE GAS | 172.415 |
| 2.3 | POISON GAS | 172.416 |
| 3 Flammable Liquid (Combustible liquid) | FLAMMABLE LIQUID (none) | 172.419 |
| 4.1 | FLAMMABLE SOLID | 172.420 |
| 4.2 | SPONTANEOUSLY COMBUSTIBLE | 172.422 |
| 4.3 | DANGEROUS WHEN WET | 172.423 |
| 5.1 | OXIDIZER | 172.426 |
| 5.2 | ORGANIC PEROXIDE | 172.427 |
| 6.1 (material poisonous by inhalation (see § 171.8 of this subchapter)) | POISON INHALATION HAZARD | 172.429 |
| 6.1 (other than a material poisonous by inhalation) | POISON | 172.430 |
| 6.1 (inhalation hazard, Zone A or B) | POISON INHALATION HAZARD | 172.429 |
| 6.1 (other than inhalation hazard, Zone A or B) | POISON | 172.430 |
| 6.2 | INFECTIOUS SUBSTANCE | 172.432 |
| 7 (see § 172.403) | RADIOACTIVE WHITE-I | 172.436 |
| 7 | RADIOACTIVE YELLOW-II | 172.438 |
| 7 | RADIOACTIVE YELLOW-III | 172.440 |
| 7 (fissile radioactive material; see § 172.402) | FISSILE | 172.441 |
| 7 (empty packages, see § 173.428 of this subchapter) | EMPTY | 172.450 |
| 8 | CORROSIVE | 172.442 |
| 9 | CLASS 9 | 172.446 |

[Amdt. 172-123, 55 FR 52593, Dec. 21, 1990, as amended at 56 FR 66255, Dec. 20, 1991; Amdt. 172-151, 62 FR 1228, Jan. 8, 1997; 64 FR 10776, Mar. 5, 1999; 64 FR 51918, Sept. 27, 1999; 69 FR 3668, Jan. 26, 2004; 69 FR 64471, Nov. 4, 2004; 78 FR 60753, Oct. 2, 2013; 85 FR 83381, Dec. 21, 2020; 87 FR 79773, Dec. 27, 2022]