CHEAT SHEET FOR CPC-1325 - Final Action - Revision to MSRP Section C Part III, M-1002, Specifications for Tank Cars - Chapter 2

Sep 25, 2026

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Revision cheat sheet for CPC-1325 (Final Action) covering the update to MSRP Section C Part III, M-1002, “Specifications for Tank Cars,” Chapter 2, effective April 7, 2017. The note consolidates referenced CFR tables for tank cars transporting TIH materials and specifies proper shipping names linked to authorized tank car specifications. It includes a consolidated reference-only mapping of tank car specs to shipping names and a supporting excerpt detailing requirements and alternative tank car provisions for PIH materials.

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CHEAT SHEET FOR CPC-1325

Revision scope and references

Consolidated reference table: authorized tank car specification to proper shipping name

Note excerpt: PIH requirements and alternative tank car provisions

CHEAT SHEET FOR CPC-1325 CPC-1325 Final Action, Revision to MSRP Section C Part III, M-1002, Specifications for Tank Cars, Chapter 2 Issued: April 07, 2017 Effective: April 07, 2017 The revision to MSRP Section C Part III, M-1002, Specifications for Tank Cars, Chapter 2; Section 2.8 “Tank Cars Transporting TIH” makes reference to several CFR documents and tables contained therein. The information contained in the tables of these documents (49 CFR 173.244 “Bulk packaging for certain pyrophoric liquids (Division 4. 2), dangerous when wet (Division 4.3) materials, and poisonous liquids with inhalation hazards (Division 6. 1)” and 49 CFR 173.314 “Compressed gases in tank cars and multi-unit tank cars”) has been consolidated below. The following table is intended for reference only and does not replace the information contained in the Specification and Codes. | Authorized tank car specification (see Note below) | Proper shipping name | | --- | --- | | 105J500I | Acetone cyanohydrin, stabilized Allyl Alcohol
Ammonia, anhydrous, or ammonia solutions >50 percent ammonia Ammonia solutions with >35 percent, but ≤50 percent ammonia by mass Argon, compressed Note 4 107
Boron trichloride Note 3 105, 106 Bromine
Carbon dioxide, refrigerated liquid Chloropicrin
Chlorosulfonic acid Dimethyl sulfate
Dinitrogen tetroxide, inhibited
Division 2.1 materials not specifically
identified in the compressed gases table (49 CFR 173.314)
Division 2.2 materials not specifically identified in the compressed gases table (49 CFR 173.314)
Division 2.3 Zone C materials not specifically identified in the compressed gases table (49 CFR 173.314)
Division 2.3 Zone D materials not specifically identified in the compressed gases table (49 CFR 173.314)
Ethylamine
Ethyl chloroformate Helium, compressed Hexachlorocyclopentadiene
Hydrocyanic acid, aqueous solution or Hydrogen cyanide, aqueous solution with not morethan 20% hydrogen cyanide
Hydrogen | | | Hydrogen fluoride, anhydrous Methyl bromide
Methyl chloride
Methyl mercaptan Methylamine, anhydrous Nitrogen, compressed Nitrosyl chloride
Nitrous oxide, refrigerated liquid Oxygen, compressed Phosgene
Phosphorus trichloride
Poison inhalation hazard, Zone B materials not specifically identified in the PIH table (49 CFR 173. 244)
Sulfur dioxide, liquefied Sulfuric acid, fuming Sulfur trioxide, stabilized Sulfuryl fluoride Titanium tetrachloride Vinyl fluoride, stabilized | | --- | --- | | 105J600I | Acetone cyanohydrin, stabilized Allyl Alcohol
Ammonia, anhydrous, or ammonia solutions >50 percent ammonia Ammonia solutions with >35 percent, but ≤50 percent ammonia by mass Argon, compressed Note 4 107
Boron trichloride Note 3 105, 106 Carbon dioxide, refrigerated liquid Chloropicrin
Chlorosulfonic acid Dimethyl sulfate
Division 2.3 Zone D materials not specifically identified in this table Ethylamine
Ethyl chloroformate Helium, compressed Hexachlorocyclopentadiene
Hydrocyanic acid, aqueous solution or Hydrogen cyanide, aqueous solution with not more than 20% hydrogen cyanide
Hydrogen
Hydrogen fluoride, anhydrous Phosphorus trichloride
Poison inhalation hazard, Zone B materials not specifically identified in the PIH table (49 CFR 173. 244)
Sulfuric acid, fuming Sulfur trioxide, stabilized Titanium tetrachloride | | 112J500I | Hydrogen chloride, refrigerated liquid | Note (excerpt from 49 CFR 173.244 and 49 CFR 173.314): “…Except as provided by paragraph (d) of this section, for materials poisonous by inhalation, fusion-welded tank car tanks built on or after March 16, 2009 used for the transportation of the PIH materials noted, must meet the applicable authorized tank car specification and must be equipped with a head shield as prescribed in § 179. 16(c)(1) . (d) Alternative tank car tanks for materials poisonous by inhalation. (1) As an alternative to the authorized tank car specification noted in the column 4

FAQs

What CFR sources are consolidated in the CPC-1325 cheat sheet table?

The cheat sheet consolidates information from 49 CFR 173.244 (bulk packaging for certain pyrophoric, dangerous when wet, and poisonous liquids with inhalation hazards) and 49 CFR 173.314 (compressed gases in tank cars and multi-unit tank cars).

Is the consolidated table intended to replace the underlying specification and codes?

No. The table is intended for reference only and does not replace the information contained in the Specification and Codes.

What is the purpose of the “Note (excerpt)” section regarding poisonous by inhalation (PIH) materials?

The excerpt explains requirements for tank car tanks used to transport PIH materials, including conditions involving authorized tank car specifications, head shield requirements, and an alternative tank car tank approach based on test pressure and plate thickness calculations.

Sep 25, 2026

Uploaded by Himbo