Combustible Liquid can burn on the basis of flash points that is classified, or grouped, as either flammable or combustible by their flashpoints.
Reference Definition by The National Fire Protection Association (NFPA): Combustible Liquid is a term used to classify certain liquids that will burn on the basis of flash points. The National Fire Protection Association (NFPA) defines a combustible liquid as any liquid that has a closed-cup flash point above 100 °F (37.8 °C) (NFPA 30). There are three subclasses, as follows; Class II liquids have flash points at or above 100 °F (37.8 °C) but below 140 °F (60 °C). Class III liquids are subdivided into two additional subclasses; Class IIIA: Those having flash points at or above 140 °F (60 °C) but below 200 °F (93.4 °C), Class IIIB: Those having flash points at or above 200 °F (93.4 °C). The Department of Transportation (DOT) defines the combustible liquids are as those having flash points above 140 °F (60.5 °C) and below 200 °F (93.4 °C).
