Proper Shipping Name: The Key to Accurate and Safe Logistics

The proper shipping name (PSN) is the standardized, regulatory name assigned to substances or articles for transport to ensure correct classification, labeling, documentation, handling, and emergency response during shipment.

What the proper shipping name is

The proper shipping name (PSN) is the exact, standardized term used in national and international dangerous-goods regulations to identify a substance or article being transported. Regulators such as the International Maritime Dangerous Goods (IMDG) Code, the International Civil Aviation Organization (ICAO)/IATA rules, and national agencies like the U.S. Department of Transportation (49 CFR) publish lists of approved PSNs paired with UN numbers, hazard classes, and packing requirements. Using the PSN ensures everyone in the supply chain — carriers, freight forwarders, warehouse staff, emergency responders, and customs — understands the nature and hazards of the shipment.

Why the PSN matters in logistics

Accurate use of the PSN is foundational to safety, compliance, and operational efficiency. A correct PSN enables:

• Proper documentation: Shipping papers and transport documents must show the PSN so carriers and authorities can verify classification and route shipments appropriately.
• Correct labeling and placarding: Labels and placards display the PSN (or its approved shorthand) and hazard class, providing quick recognition of risks during handling and transport.
• Safe packaging and segregation: PSNs are linked to packing groups and material compatibility rules that determine packaging type and how goods are stowed with other cargo.
• Effective emergency response: First responders and emergency services use the PSN and associated UN number to look up hazard information and response actions in resources such as the Emergency Response Guidebook (ERG).
• Regulatory compliance: Misuse of PSNs can cause fines, shipment delays, rejected consignments, and legal liability.

How to determine the correct PSN (beginner-friendly steps)

1. Identify the material: Start with product formulation, Safety Data Sheet (SDS), and manufacturer specifications to determine hazards (flammable, corrosive, toxic, oxidizing, etc.).
2. Find the hazard class: Use the SDS and test data to identify the primary hazard class (e.g., Class 3 flammable liquids, Class 8 corrosives).
3. Consult the regulations: Look up the material or its UN number in the applicable regulations (IMDG, ICAO/IATA, 49 CFR). The PSN is listed alongside the UN number, class, and packing group.
4. Apply required modifiers: Some entries require technical names in parentheses, subsidiary hazard notes, or additional descriptions (e.g., “n.o.s.” meaning “not otherwise specified”). Use these when regulations require them.
5. Include full transport description: For shipping papers, combine UN number, PSN (capitalized as required), hazard class, and packing group in the correct order (for example: UN 1203, GASOLINE, 3, PG II).

Practical examples

Examples show how PSNs appear in transport descriptions. These are illustrative; always confirm against current regulations for your jurisdiction and mode of transport.

• UN 1203, GASOLINE, 3, PG II — a typical description for gasoline (flammable liquid).
• UN 3264, CORROSIVE LIQUID, ACIDIC, INORGANIC, N.O.S. (contains sulfuric acid), 8, PG II — example where an "n.o.s." entry includes a technical constituent in parentheses.
• ID 8000, CONSUMER COMMODITY, 9 — a common PSN used for small packaged consumer goods meeting limited quantity rules under air transport.

Best practices for logistics teams

• Use the current edition of the relevant regulations for the transport mode (IMDG for sea, IATA/ICAO for air, 49 CFR for the U.S. ground rules).
• Rely on the SDS but verify classification against regulatory criteria; an SDS alone does not always provide the PSN or UN number.
• Train staff who prepare shipping papers and labels; small errors in naming or punctuation can create compliance problems.
• Standardize templates in your transport documentation to include UN number, PSN (in capital letters where required), hazard class, packing group, and emergency contact information.
• When in doubt, consult a qualified dangerous goods safety adviser or a competent regulatory authority for classification guidance.

Common mistakes (and how to avoid them)

• Using trade names instead of the PSN: Trade names like “SuperClean Solvent” are not acceptable on transport documents; always use the regulatory PSN.
• Misspelling or incorrect capitalization: Regulations often require exact wording and capitalization for PSNs; small deviations can be considered incorrect.
• Omitting required technical names or subsidiary hazards: If the regulation requires a technical name in parentheses or lists a subsidiary hazard, omitting it can lead to noncompliance.
• Mismatching PSN and UN number: Ensure the PSN and UN number pair is valid in the applicable regulation — they are linked and must correspond.
• Applying the wrong PSN for the transport mode: Some entries differ between sea, air, and road rules; confirm the PSN for the specific mode or route.

Special cases and exceptions

Regulations include limited quantity exceptions, specific consumer commodity entries, and variations for packed articles. Some commodities may be transported under generic PSNs with “n.o.s.” (not otherwise specified) when a precise entry does not exist, but you must list one or more technical names in parentheses. Certain small-pack exceptions reduce labeling requirements but still require correct PSN identification on transport documents.

How the PSN fits into operational workflows

In a logistics operation, classification and PSN determination typically occur during order intake or product onboarding. Once assigned, the PSN should be stored in your warehouse management system (WMS), transportation management system (TMS), or product master data. This enables automated label generation, correct routing, segregation rules, and consistency across carriers and warehouses.

Final tips



Think of the proper shipping name as the single source of truth for a product’s transport identity: it informs paperwork, packaging, handling, and emergency response. Keep classification up to date, train staff, and use regulatory resources or qualified advisors when uncertain. Clear, accurate PSN usage reduces risk, speeds clearance, and keeps people and cargo safe.