What type of chemical hazard is described as a pyrophoric material?

The definition of a pyrophoric material is specifically tied to its ability to ignite spontaneously when exposed to air at relatively low temperatures, typically at or below 130°F (54°C). This characteristic makes pyrophoric materials particularly hazardous in laboratory settings because they do not require any external ignition source, such as a spark or flame, to catch fire.

Understanding this distinction is crucial for safely handling such materials, especially in laboratory environments where flammable gases and other reactive substances may be present. The correct identification of these hazards avoids potential accidents and ensures appropriate safety measures are in place when working with substances that have spontaneous ignition characteristics.