政策法规现行有效美国危险品合规

§ 172.330 Tank cars and multi-unit tank car tanks.

效力	法规类型	发布日期	生效日期	发文机构
现行有效	部门规章	2026-08-07	2026-09-08	Code of Federal Regulations (CFR) - Transportation (Title 49)

发布08-07

生效09-08

摘要总结AI 辅助解读

本法规（49 CFR § 172.330）规定了美国境内运输危险品时，罐车（Tank cars）及多单元罐体（Multi-unit tank car tanks）的标记要求。核心义务包括：所有罐车必须按§ 172.302在两侧及两端标记识别编号；特定高危物质（如无水氨、氯气、氢氟酸等）必须在侧面额外标记正确的运输名称或通用名称；多单元罐体需在相对两侧以不小于50mm字体标记名称和编号；未加臭液化石油气（LPG）必须清晰标记“NON-ODORIZED”。违反标记规定将导致货物被拒运或面临处罚。

(a) Shipping name and identification number. No person may offer for transportation or transport a hazardous material—

- (1) In a tank car unless the following conditions are met:

(i) The tank car must be marked on each side and each end as required by § 172.302 with the identification number specified for the material in the § 172.101 table; and

- (ii) A tank car containing any of the following materials must be marked on each side with the key words of the proper shipping name specified for the material in the § 172.101 table, or with a common name authorized for the material in this subchapter ( e.g., “Refrigerant Gas”):

Acrolein, stabilized Ammonia, anhydrous Ammonia solutions (more than 50% ammonia) Bromine or Bromine solutions Bromine chloride Chloroprene, stabilized Dispersant gas or Refrigerant gas (as defined in § 173.115 of this subchapter) Division 2.1 materials Division 2.2 materials (in Class DOT 107 tank cars only) Division 2.3 materials Formic acid Hydrocyanic acid, aqueous solutions Hydrofluoric acid, solution Hydrogen cyanide, stabilized (less than 3% water) Hydrogen fluoride, anhydrous Hydrogen peroxide, aqueous solutions (greater than 20% hydrogen peroxide) Hydrogen peroxide, stabilized Hydrogen peroxide and peroxyacetic acid mixtures Nitric acid (other than red fuming) Phosphorus, amorphous Phosphorus, white dry or Phosphorus, white, under water or Phosphorus white, in solution, or Phosphorus, yellow dry or Phosphorus, yellow, under water or Phosphorus, yellow, in solution Phosphorus white, molten Potassium nitrate and sodium nitrate mixtures Potassium permanganate Sulfur trioxide, stabilized Sulfur trioxide, uninhibited

- (2) In a multi-unit tank car tank, unless the tank is marked on two opposing sides, in letters and numerals no less than 50 mm (2.0 inches) high—

(i) With the proper shipping name specified for the material in the § 172.101 table or with a common name authorized for the material in this subchapter (e.g., “Refrigerant Gas”); and

- (ii) With the identification number specified for the material in the § 172.101 table, unless marked in accordance with §§ 172.302(a) and 172.332 of this subpart.

(b) A motor vehicle or rail car used to transport a multi-unit tank car tank containing a hazardous material must be marked on each side and each end, as required by § 172.332, with the identification number specified for the material in the § 172.101 table.
(c) No person may offer for transportation or transport a tank car or multi-unit tank car tank containing unodorized liquefied petroleum gas (LPG) unless it is legibly marked NON-ODORIZED or NOT ODORIZED on two opposing sides near the marked proper shipping name required by paragraphs (a)(1) and (2) of this section, or near the placards. The NON-ODORIZED or NOT ODORIZED marking may appear on a tank car or multi-unit tank car tank used for both unodorized and odorized LPG.

[Amdt. 172-123, 55 FR 52593, Dec. 21, 1990, as amended at 56 FR 66255, Dec. 20, 1991; 57 FR 45458, Oct. 1, 1992; Amdt. 172-148, 61 FR 28676, June 5, 1996; Amdt. 172-148, 61 FR 50254, Sept. 25, 1996; 66 FR 33425, June 21, 2001; 69 FR 64471, Nov. 4, 2004; 81 FR 35540, June 2, 2016; 85 FR 83380, Dec. 21, 2020]