What is the minimum maintained temperature of MC materials at all times?

The minimum maintained temperature of MC (Medium Curing) materials is critical for ensuring their proper handling and application. Maintaining the temperature at least 10°C below the flash point is essential because the flash point refers to the lowest temperature at which the vapors of the material can ignite. By keeping the temperature below this threshold, it helps prevent the risk of fire and ensures safe operations during application.

Adhering to this guideline protects workers from potential hazards associated with high temperatures and prevents the degradation of the material. Higher temperatures could not only increase the risk of ignition but could also alter the properties of the MC material, affecting its performance in asphalt applications.

Other options revolve around concepts like boiling point, melting point, and evaporation point, which are related to different physical characteristics of materials but do not specifically address the safety considerations directly tied to the application and handling of MC materials as effectively as the flash point does.