If "RQ" is indicated before or after the item description on shipping papers, what does it signify?

When "RQ" is indicated before or after the item description on shipping papers, it signifies that the material is a Reportable Quantity. This means that if there is a spill of this material during transport, the shipper must notify the appropriate authorities, such as the National Response Center, as required by environmental regulations. Reporting spills is critical to ensure proper handling and response to hazardous materials to protect public health and the environment.

The "RQ" marking serves as a reminder that specific regulations are in place regarding the transport of these materials, emphasizing the need for diligence in monitoring and reporting any incidents that occur during transit. This designation indicates that the quantity of the hazardous substance being transported could pose a risk if released, thereby necessitating prompt communication to ensure safety measures are enacted.