UN Number
Category: Compliance
Definition (plain English)
A four-digit identifier assigned to hazardous substances or articles for dangerous-goods transport.
Why it matters commercially
The UN number drives packing instructions, labels, segregation, carrier acceptance, freight cost, and emergency-response information.
Example
A forwarder refused booking until the supplier provided the SDS showing UN number, class, packing group, and limited-quantity status.
Common mistake
Using a product marketing name instead of checking SDS and UN classification before quoting freight.
Use this in CommerceKit
Freight Cost Per Unit Calculator
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