Look up any hazardous material.
UN number, shipping name, class, placards, segregation — sourced from 49 CFR and PHMSA data.
Tools
Load Check
Build a multi-material load and get required placards, segregation conflicts, and Class 1 compatibility.
Segregation Matrix
Interactive 49 CFR 177.848 chart — see which classes may not be loaded together.
Class 1 Compatibility
Explosives compatibility groups A–S. Tap any pair for the full note.