The International Fire Code and the National Fire Protection Association define flammable and combustible liquids according to their flash point, with flammable liquids having a flash point of less ...

One significant area of change is in how flammable and combustible liquids are defined. Not only were the criteria for the different categories changed but the terminology was changed as well.

Never store flammable liquids in a domestic refrigerator. Keep away from combustible and flammable materials. Keep away from reducing agents such as zinc, alkali metals, hydrazine, oxalic acid, and ...