Hazard classifications
National Fire Protection Association (NFPA) hazard classifications for flammable and combustible liquids are listed below:
| Hazard classification for flammable liquids | |||
|---|---|---|---|
| Class | Flash point | Boiling point | Examples |
| I-A | below 73°F (23°C) | below 100°F (38°C) | diethyl ether, pentane, ligroin, petroleum ether |
| I-B | below 73°F (23°C) | at or above 100°F (38°C) | acetone, benzene, cyclohexane, ethanol |
| I-C | 73-100°F (24-38°C) | ---- | p-xylene |
| Hazard classification for combustible liquids | |||
| II | 101-140°F (39-60°C) | ---- | diesel fuel, motor oil, kerosene, cleaning solvents |
| III-A | 141-199°F (61-93°C) | ---- | paints (oil base), linseed oil, mineral oil |
| III-B | 200°F (93°C) or above | ---- | paints (oil base), neatsfoot oil |