As used in this subchapter, “flammable liquid” means any liquid having a flash point below 200 degree F. and having a vapor pressure not exceeding 40 pounds per square inch (absolute).
Flammable liquids shall be divided into three classes as follows:Class I shall include those having flash points at or below 20 degree F.Class II shall include those having flash points above 20 degree F. but at or below 70 degree F.Class III shall include those having flash points above 70 degree F.
Class I shall include those having flash points at or below 20 degree F.
Class II shall include those having flash points above 20 degree F. but at or below 70 degree F.
Class III shall include those having flash points above 70 degree F.
When artificially heated to temperatures equal to or higher than their flash points, Class II and III liquids shall be subject to the applicable requirements for Classes I or II liquids. The provisions in this subchapter shall also be applied to high flash point liquids which otherwise would be outside of its scope when they are so heated.
Representative examples of flammable liquids by classes are:Class IClass IIClass IIIAcetoneAmyl AcetateAmyl AlcoholBenzol (CommercialFuel OilCollodion grade)KeroseneEtherEthyl AcetateStoddard SolventGasolineEthyl AlcoholTurpentine.Methyl AcetateMethyl Alcohol NaphthaToluol Pyridine
Class IClass IIClass IIIAcetoneAmyl AcetateAmyl AlcoholBenzol (CommercialFuel OilCollodion grade)KeroseneEtherEthyl AcetateStoddard SolventGasolineEthyl AlcoholTurpentine.Methyl AcetateMethyl Alcohol NaphthaToluol Pyridine