Which color signifies reactivity in hazard classification?

The color that signifies reactivity in hazard classification is yellow. In the context of hazardous materials and safety protocols, yellow is commonly associated with a potential for reactivity or instability. This classification is crucial for identifying materials that may pose significant risks when exposed to certain conditions, such as heat or shock. Reactivity can lead to dangerous reactions, including explosions or the release of toxic substances.

Other colors in hazard classification serve different purposes. For example, blue typically denotes health hazards, indicating potential risks to health from exposure to a substance. Green is often associated with safety and health precautions, suggesting that a particular material is generally safe. White can signify specific information such as protective equipment requirements or may denote a specific category of materials in other systems. Understanding these color codes is essential for safety professionals to quickly assess risks and implement appropriate safety measures.