Academy6 min read
Sodium Hypochlorite Dangerous Goods Classification: UN1791
Sodium hypochlorite dangerous goods classification explained: UN1791, packing group by chlorine strength, carrier limits. Check your SKU free.
Dangerous goods classification blog
Working notes from the team that maintains the Classify7 ruleset. Every guide here is written for the person who has to put a UN number on a shipping paper this afternoon, not for a compliance auditor with a fortnight to spare.
Reviews6 min read
Dangerous Goods Classification Software Compared
Enterprise suites, spreadsheets or an API? An honest look at dangerous goods classification software, what each is for, and where each one fails.
Reviews6 min read
ShipStation Hazmat Support vs Shippo and EasyPost
Shipping platforms print labels; they do not classify. What ShipStation hazmat support actually covers, where the gap sits, and how to fill it.
Reviews6 min read
Manual vs Automated Hazardous Cargo Classification
When does hazardous cargo classification stop working as a spreadsheet job? An honest look at the crossover point, with the numbers behind it.
News6 min read
Hazardous Goods Classification and the 49 CFR Table
Read the Hazardous Materials Table column by column. A working guide to hazardous goods classification under 49 CFR 172.101, and what mistakes cost.
News6 min read
Dangerous Cargo Classification: UPS vs FedEx vs USPS
Carrier tariffs are stricter than the regulations and disagree with each other. A dangerous cargo classification comparison across the major carriers.
Academy5 min read
Dry Ice Dangerous Goods Classification: UN1845
Dry ice dangerous goods classification in plain English: UN1845, net weight marking, venting and carrier limits. Check your cold-chain parcels free.
News6 min read
IATA DGR Classification: What Changed for 2026
The 67th edition took effect on 1 January 2026. What changed in IATA DGR classification, what did not, and what parcel shippers should check now.
Academy6 min read
Amazon FBA Hazmat Review: What Sellers Must Submit
How the Amazon FBA hazmat review works, what documents clear it fastest, and why listings get stranded. Classify your SKUs before you submit.
Academy6 min read
Classes of IMDG Explained: A Guide for Ocean Freight
The classes of IMDG mirror the nine hazard classes but add segregation, marine pollutants and stowage. What ocean shippers need beyond a UN number.
Academy6 min read
GHS Dangerous Goods Classification: Reading an SDS
Four SDS sections carry everything you need. A practical guide to GHS dangerous goods classification from a safety data sheet — and when not to trust it.
Academy7 min read
The Nine Classes of Hazardous Materials, Explained
All nine classes of hazardous materials with their divisions, labels and everyday examples. The complete reference for shippers — classify yours free.
Academy6 min read
Hazardous Goods Categories: Packing Groups I, II, III
Packing groups grade danger within a class and set your packaging standard. How hazardous goods categories are decided, with the thresholds that matter.
Academy7 min read
Lithium Battery Shipping Compliance: PI965 to PI967
The three packing instructions decide your UN number, labels and paperwork. A clear guide to lithium battery shipping compliance, with a decision table.
Academy6 min read
UN Number Lookup: A Quick Reference for Shippers
What a UN number means, how to do a UN number lookup properly, and the 25 codes e-commerce sellers hit most. Look yours up free in seconds.
Academy8 min read
Dangerous Goods Classification: Is My Product Hazmat?
A five-step dangerous goods classification check for e-commerce sellers. Work out if your product is regulated before the carrier does. Try it free.