Welcome to DOE's RQ•Calculator for mobile devices. Enter the name of a hazardous substance or its Chemical Abstract Service (CAS) number in the field above to look up its Reportable Quantity (RQ) or to evaluate whether a release to the environment must be reported to the National Response Center. If you misspell the name of the substance, the RQ•Calculator will return a list of possible alternatives.

Please see our disclaimer before using the results of the RQ•Calculator in making reporting decisions.

Office of Nuclear Safety and Environment