UN 1325 — Flammable solid, organic, n.o.s.

UN 1325, also known as Flammable solid, organic, n.o.s., is a DOT Class 4 substance that poses significant fire and explosion hazards. It is commonly used in various industrial applications, including manufacturing and transportation. First responders may encounter this substance during transportation accidents, fires, or spills. The scale of production and transport of this substance is substantial, making it a critical component of emergency response planning. The substance is often transported in large quantities, increasing the risk of accidents and spills. As a result, first responders must be well-trained and equipped to handle incidents involving UN 1325. The substance's flammability and potential for explosive violence make it a high-priority concern for emergency responders.

Hazard overview: UN 1325 is a highly flammable substance that may be ignited by friction, heat, sparks, or flames. It can burn rapidly with a flare-burning effect, and powders, dusts, shavings, borings, turnings, or cuttings may explode or burn with explosive violence. The substance may be transported in a molten form at a temperature that may be above its flash point, increasing the risk of fire and explosion. The hazard posed by UN 1325 is further complicated by its potential to react with water, air, or other substances, leading to the release of toxic gases or the formation of explosive mixtures. In the event of a fire, the substance may release toxic fumes, including carbon monoxide and particulate matter. The substance's flammability and potential for explosive violence make it a high-priority concern for emergency responders.

Response guidance: In the event of a spill or leak, first responders should isolate the area for at least 25 meters (75 feet) in all directions and call 911. The area should be ventilated, and unauthorized personnel should be kept away. If a tank or rail car is involved in a fire, the isolation distance should be increased to 800 meters. The correct suppression agent for UN 1325 is dry chemical, CO2, sand, or earth, and water spray may be used to cool containers. Decontamination procedures should be followed, and CHEMTREC should be contacted in the event of a spill or leak. First responders should be aware of the substance's potential to react with water, air, or other substances, leading to the release of toxic gases or the formation of explosive mixtures.

Firefighter training notes: First responders should be trained to recognize the hazards posed by UN 1325 and to respond accordingly. They should be aware of the substance's potential to ignite or explode and should take steps to prevent these outcomes. A common tactical error when responding to incidents involving UN 1325 is the failure to properly isolate the area, which can lead to the spread of the substance and increased risk to responders and the public. First responders should be trained to use the correct suppression agents and to follow decontamination procedures.

Regulatory context: UN 1325 is a DOT Class 4 substance, and its transportation is regulated by the Department of Transportation. The substance is not listed on the CERCLA list, but it may be subject to other regulations, such as OSHA's Hazard Communication Standard. The substance's packing group is not specified, but it is considered a hazardous material and should be handled and transported accordingly.

Storage & handling: UN 1325 should be stored in a cool, dry place, away from incompatible materials such as oxidizers, acids, and bases. The storage area should be well-ventilated, and the substance should be kept away from heat sources and ignition sources. The substance should be stored in a container that is compatible with the substance and the environment in which it is being used.