Where should open containers of Class I liquids not be placed?

Open containers of Class I liquids should not be placed near heat sources due to the highly flammable nature of these liquids. Class I liquids have low flash points, meaning they can easily vaporize and form flammable mixtures with air, posing a significant risk of ignition. When near heat sources, the temperature can increase the likelihood of vapors igniting, leading to a fire or explosion. This is particularly dangerous in environments where open containers are left unattended, as it increases the risk of an accidental ignition event.

By ensuring that open containers of Class I liquids are stored away from heat sources, safety protocols can help mitigate the risk of fire hazards associated with these volatile materials. In contrast, storing them in a locked facility, well-ventilated areas, or unused basements can also be considered appropriate practices, provided they adhere to safety regulations and guidelines.