What is a major risk associated with Class 3 flammable and combustible liquids?

The major risk associated with Class 3 flammable and combustible liquids is that containers may rupture violently due to heat or fire. This classification refers to liquids that have flash points between 100°F (37.8°C) and 140°F (60°C), making them particularly prone to ignition when exposed to certain temperatures. When these liquids are heated, the pressure inside their containers can increase significantly, leading to catastrophic failure or explosions. This poses dangers to both people and the environment, making it crucial to handle and store these liquids properly to mitigate risks.

The other options do not reflect the nature of Class 3 liquids accurately. While it might seem that they can be stored safely, the risk of rupture under heat or fire conditions undermines this notion. Producing beneficial chemicals when burned is misleading, as the combustion of flammable liquids can generate toxic by-products. Additionally, not all Class 3 liquids are non-corrosive, and some may even have corrosive properties, further emphasizing the need for cautious handling and awareness of their risks.