Flammable and Combustible Liquid Hazard Classifications

Hazard classifications

National Fire Protection Association (NFPA) hazard classifications for flammable and combustible liquids are listed below:

Hazard classification for combustible liquids

ClassFlash pointBoiling pointExamples
I-Abelow 73°F (23°C)below 100°F (38°C)diethyl ether, pentane, ligroin, petroleum ether
I-Bbelow 73°F (23°C)at or above 100°F (38°C)acetone, benzene, cyclohexane, ethanol
I-C73-100°F (24-38°C)----p-xylene
II101-140°F (39-60°C)----diesel fuel, motor oil, kerosene, cleaning solvents
III-A141-199°F (61-93°C)----paints (oil base), linseed oil, mineral oil
III-B200°F (93°C) or above----paints (oil base), neatsfoot oil

 

Staff

Stanley Howell
Sr. Program Manager
Chemical Safety
609-258-2711

Steve Elwood
Director for Research Safety
609-258-6271