A flammable liquid is classified as what type of hazard?

A flammable liquid is classified as a physical hazard because it poses a risk of fire or explosion when it comes into contact with an ignition source. Physical hazards are essentially those conditions that can cause a physical change or unsafe situation, such as fire, that can lead to injury, damage, or destruction. Flammable liquids can ignite easily and burn rapidly, making them a significant concern in any workplace where they are present.

In contrast, sensitizers are substances that can cause allergic reactions upon exposure, while peroxides are organic compounds that can present risks of decomposition or explosion, particularly under heat or pressure. Health hazards relate more to substances that can cause chronic or acute health effects, such as toxicity or carcinogenic effects, through inhalation, skin contact, or ingestion. Thus, the classification of flammable liquids squarely aligns with their potential to cause immediate danger in the form of fire or explosion, categorizing them under physical hazards.