GHS hazard class · Physical hazards
Pyrophoric solids
Pyrophoric solids are solids that, even in small quantities, ignite within five minutes of coming into contact with air.
What it means
The solid can catch fire spontaneously in air without any spark or flame.
What to do
Handle and store under inert gas or in the sealed container the supplier specifies, keep away from air and moisture, and use only with trained staff and the protective equipment named on the SDS.
This is general guidance for the class. Your product's safety data sheet takes precedence.
Categories and hazard statements
| Code | Category | Statement | Pictogram | Signal word |
|---|---|---|---|---|
| H250 | Category 1 | Catches fire spontaneously if exposed to air | GHS02 | Danger |
Chemicals with pyrophoric solids hazard codes
Chemicals in our database whose primary classification includes any current Pyrophoric solids code (H250).
1 chemical in our database. Classification comes from each chemical's primary GHS source, so a supplier's SDS may differ.
Pyrophoric solids: frequently asked questions
What is the GHS hazard class "Pyrophoric solids"?
Pyrophoric solids are solids that, even in small quantities, ignite within five minutes of coming into contact with air.
Which hazard statements belong to Pyrophoric solids?
The current hazard statements for this class are H250.
Which pictograms and signal words are used for Pyrophoric solids?
Pictograms: GHS02 (Flame). Signal word: Danger, depending on the category.
What should I do when working with a pyrophoric solids hazard?
Handle and store under inert gas or in the sealed container the supplier specifies, keep away from air and moisture, and use only with trained staff and the protective equipment named on the SDS.
https://pubchem.ncbi.nlm.nih.gov/ghs/ghscode_10.txt (UN GHS Revision 10, retrieved 2026-10-12)