Is transformer mineral oil flammable?

Transformer mineral oil is generally classified as a combustible liquid rather than a highly flammable one. It has a relatively high flash point, typically above 140°F (60°C), which means it requires a substantial amount of heat to ignite. While it can catch fire under certain conditions, such as high temperatures or direct contact with an open flame, it is not as easily ignitable as other flammable liquids. Therefore, while transformer mineral oil is not considered highly flammable, it is important to handle it with care to prevent any potential fire hazards in industrial settings.