What type of waste can be classified as ignitable?

Ignitable waste refers to any waste that can easily combust or catch fire under specific conditions. This encompasses a variety of forms that can pose significant risks in terms of safety and environmental impact.

Liquid waste is one of the primary categories that can be ignitable, particularly when it has a flash point below 60 degrees Celsius (140 degrees Fahrenheit). Common examples include solvents, fuels, and certain oils. However, ignitability is not limited to just liquid substances.

Compressed gases can also be considered ignitable, particularly when they are flammable or explode upon ignition. Materials such as propane, butane, or other gaseous substances under pressure fall into this category and present significant hazards in the event of a leak or rupture.

Moreover, solid wastes can also be classified as ignitable if they have the capacity to combust or can readily ignite. This includes materials like certain types of paper, wood, plastics, and other organic materials that can catch fire.

Therefore, since ignitability can apply to liquids, compressed gases, and solids, classifying all these types as ignitable waste is appropriate. The correct answer acknowledges the diverse nature of ignitable waste and reinforces the need for careful handling and disposal of various hazardous materials in different physical states.