What is the significance of the Proper Shipping Name (PSN) as it relates to the IMDG Code?

The Proper Shipping Name (PSN) is of utmost significance within the IMDG Code because it is the standardized, internationally recognized term used to accurately identify a specific hazardous substance or article for transport purposes. The PSN is not just any name; it is a designated term listed in the IMDG Code's Dangerous Goods List, and it is the key to accessing all the relevant regulations pertaining to that substance. It dictates requirements for packaging, labeling, stowage, segregation, and emergency response. Using the correct PSN ensures that all parties involved in the transport chain – shippers, carriers, port authorities, and emergency responders – are aware of the specific hazards associated with the cargo and can take appropriate precautions. An incorrect or incomplete PSN can lead to misidentification of the hazard, resulting in improper handling, stowage, or emergency response, potentially leading to accidents, injuries, or environmental damage. The PSN must be clearly and prominently displayed on shipping documents and package labels, enabling quick and accurate identification of the hazardous material. The PSN links directly to specific requirements within the IMDG Code, making it the foundation for safe and compliant transport of dangerous goods by sea. Therefore, its accuracy and correct application are paramount.