Hazmat question
How is an RQ calculated?
For a pure listed substance, compare the quantity present with the listed RQ. For a mixture, determine the actual amount of each listed constituent from th
Answer
For a pure listed substance, compare the quantity present with the listed RQ. For a mixture, determine the actual amount of each listed constituent from the total quantity and concentration, then compare that constituent amount with its RQ.
For a pure listed substance, compare the quantity present with the listed RQ. For a mixture, determine the actual amount of each listed constituent from the total quantity and concentration, then compare that constituent amount with its RQ.
Why people ask this
Most hazmat searches happen while someone is trying to make a real operational decision: classify a product, check a package quantity, verify paperwork, review an SDS, or confirm whether a waste or chemical appears in a federal table.
Look it up instead of digging through the PDF
Search the table, compare the listed RQ, and see the source in seconds.
Related guide
What Is a Reportable Quantity (RQ)? →
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Reference basis: 49 CFR §172.101, the supplied Appendix A database, and PHMSA hazmat guidance. Verify current requirements for the specific shipment.