What color represents a reactivity hazard on the SDS triangle?

The correct answer is yellow, which signifies a reactivity hazard in the Safety Data Sheet (SDS) triangle. The SDS provides essential information about the hazards of materials and substances used in the workplace. The color-coded system helps users quickly identify the level of risk associated with each chemical.

In this context, yellow indicates that a substance has the potential for reactivity, which could mean it can undergo a chemical reaction that may create hazardous conditions, including explosions or toxic gas releases. The presence of this hazard is crucial for workers and emergency responders to understand, as it influences how these materials should be handled, stored, and disposed of safely.

Understanding the meaning of each color in the SDS triangle is vital for ensuring proper safety measures in workplaces where chemicals are involved. The other colors represent different types of hazards, such as health (blue) and flammability (red), but yellow's designation for reactivity hazards is pivotal for safe handling and risk management.