What is the NFPA rating for flammability for specific hazardous substances?

The NFPA (National Fire Protection Association) rating system for flammability categorizes substances based on their ability to ignite and sustain combustion. A rating of one indicates that the material must be preheated before it can ignite and that it poses a low hazard under heated conditions. It is generally considered to be capable of burning when exposed to a flame but requires specific conditions for ignition.

This rating serves to inform users of the level of risk present and helps in determining the appropriate safety measures necessary when handling or storing the substances. Understanding the NFPA flammability ratings is essential for ensuring proper safety protocols in environments where hazardous materials are present, as it helps assess the potential risks associated with fire.