Hazardous substance
Mercury
REPORTABLE QUANTITY1.0 lb
EQUIVALENT0.454 kg
What this means
Federal rules list Mercury as a hazardous substance, with the reporting threshold — called the reportable quantity, or RQ — shown above. If this much (or more) is spilled or released, it has to be reported to authorities. For regular chemicals and waste codes, that threshold is measured in pounds and kilograms. Knowing the RQ is one piece of hazmat compliance, not the whole picture — you'll still need to confirm the proper shipping name, packaging, and labeling separately.
Shipping classification
Under the main Hazardous Materials Table (not the RQ appendix), this entry carries the shipping classification below — hazard class, UN/NA number, packing group, and whether it can go on a plane, train, or ship.
Hazard class / division
Class 8
UN / NA identification number
UN2809
Packing group
III
Label codes
8, 6.1
Special provisions (§172.102)
365
Packaging — exceptions
164
Packaging — non-bulk
164
Packaging — bulk
240
Passenger aircraft / rail limit
35 kg
Cargo aircraft only limit
35 kg
Vessel stowage location
B
Vessel stowage — other
40, 97
Special provision and packaging codes are shown as listed in the table — they reference other sections of 49 CFR that aren't expanded here yet. View the full official table on eCFR.gov.
Check a quantity for Mercury
Search, see the reporting threshold, and check the source — in seconds.
How people use this record
- Check whether this material is on the federal hazardous substances list at all.
- Get the reporting threshold without digging through a 500-page PDF.
- Compare it to how much you actually have on hand or in a package.
- Use it as a starting point, then check the full Hazardous Materials Table for shipping requirements.
Source dataset: Appendix A to 49 CFR §172.101 supplied for HazmatTable. Open source PDF.