What is pyrophoric fluid? What is pyrophoric solid?

Pyrophoric solids are substances that can spontaneously ignite when exposed to air. These substances are usually very reactive, so they should be stored and handled with care.

For example, some metal sulfides, such as iron sulfide (FeS), are pyrophoric solids. When handling such substances, it is very important to take appropriate safety precautions.

Pyrophoric liquids are substances that can spontaneously ignite when exposed to air. These substances are usually very reactive, so they should be stored and handled with care.

For example, some organometallic compounds, such as triethylaluminum, are pyrophoric liquids. When handling such substances, it is very important to take appropriate safety precautions.