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Liquids with flashpoints greater than 100 degrees Fahrenheit are classified as combustible liquids. The flashpoint is the lowest temperature at which a liquid can vaporize to form an ignitable mixture in air. When a liquid has a flashpoint above this threshold, it is capable of burning but does not ignite as easily as flammable liquids, which have lower flashpoints (equal to or less than 100 degrees Fahrenheit).

Understanding this classification is crucial for safety and handling practices in settings where these liquids are present, as it influences the measures taken for storage, transportation, and potential hazards associated with the materials. The other classifications mentioned — non-flammable liquids, flammable liquids, and hazardous materials — refer to different characteristics, which do not specifically apply to liquids with flashpoints above 100 degrees Fahrenheit.