Search every IMDG dangerous-goods UN number by code or proper shipping name and read off the IMDG hazard class, all on one page.
IMDGdangerous goodsSOLAS Chapter VII
2328 of 2328 UN entries, showing 50. Select a result for detail.
Type a UN number, a proper shipping name, or a class in the search box, or
filter the list by class. Select any result to expand its detail: the placard
and marks, its marine-pollutant status, and links to the relevant IMDG class
guidance. The finder covers more than 2,300 UN entries.
About This IMDG Dangerous Goods Finder
This IMDG dangerous goods finder is for shippers, freight forwarders, vessel cargo officers, and anyone checking a dangerous-goods declaration who needs the IMDG hazard class for a UN number fast. It searches more than 2,300 UN entries by UN number or proper shipping name and returns the IMDG class for each match, so a single page answers what previously needed one page per code.
The data follows the IMDG Code, the International Maritime Dangerous Goods Code, which is the SOLAS Chapter VII mandatory instrument for the carriage of packaged dangerous goods by sea, maintained by the IMO and updated on a two-year amendment cycle. Each entry pairs a UN number with its hazard class and proper shipping name. Type a UN number using digits only, type part of a substance name, or pick a class from the filter to narrow the list.
It replaces the per-code single-page lookups with one searchable reference, which is faster to use and stronger as a single authoritative page than hundreds of near-identical stubs. Each result shows the UN number, the proper shipping name, the IMDG class as a badge, and a short note. For packing group, segregation, stowage category, and the complete Dangerous Goods List, consult the current IMDG Code and the per-class wiki articles below.
Data source and accuracy
The UN numbers, proper shipping names, and hazard classes are UN-harmonized reference data compiled from the public-domain US Hazardous Materials Table (49 CFR 172.101), which aligns with the IMDG Code for the large majority of entries. A small number carry United States domestic class assignments that can differ from the IMO IMDG classification, and the set does not yet span the entire Dangerous Goods List. Treat this finder as a fast first reference, and confirm the entry against the current in-force IMDG Code before any classification, packing, segregation, or stowage decision.
Every build of this site runs these cases through the calculator above and stops the release if any figure moves outside its tolerance. Load a case to put its inputs into the calculator.
Inputs
Expected result
Traced to
Load
Search 1203 returns gasoline, Class 3 flammable liquid
Shows “3 UN1203 Gasoline Flammable liquid”
49 CFR 172.101 Hazardous Materials Table, UN1203: hazard class 3, packing group II
Type the UN number (digits only, for example 1005) or the proper shipping name (for example ammonia) into the search box. The finder returns the matching entries with their IMDG hazard class.
Which dangerous goods does this cover?
It covers more than 2,300 UN entries with their IMDG hazard class, drawn from the UN-harmonized public Hazardous Materials Table. For packing group, segregation, stowage, and the definitive Dangerous Goods List, consult the current IMDG Code and the per-class wiki articles.
In short
Search more than 2,300 IMDG dangerous-goods UN numbers by code or substance name and read off the IMDG hazard class, per the IMDG Code.