Why are incompatibilities central to storage and handling?

• A. Incompatible chemicals can react violently on contact, generating heat, gas, or pressure.
• B. They do not affect storage because reactions only occur in mixing tanks.
• C. Incompatibilities only matter for transport, not storage.
• D. Incompatibilities are only about color changes, not hazards.

Answer: (A)

Incompatibilities are central to storage and handling because stored chemicals can still come into contact with each other through spills, leaks, or vapor mixing, and many incompatible pairs react violently when they meet. These reactions can release heat, generate gases, or build pressure, potentially causing fires, explosions, or container rupture even without any deliberate mixing. That’s why proper segregation, compatible container materials, venting or pressure control, and designated storage areas are essential. The other options miss the reality that hazards can arise from contact in storage (not just during transport or deliberate mixing) and that incompatibility hazards go beyond color changes to actual reactive dangers.