What solution should be used to neutralize affected nickel-cadmium battery cases?

The appropriate solution for neutralizing affected nickel-cadmium battery cases is boric acid. Nickel-cadmium batteries can leak alkaline solutions, and boric acid, being a weak acid, effectively neutralizes these alkaline substances. This neutralization helps in safely handling and disposing of the battery cases, minimizing environmental impact and safety risks.

Boric acid not only neutralizes the alkaline leakage but also has antibacterial properties, which can further enhance safety when cleaning up spills. Using the wrong substance can be less effective or even potentially hazardous. For example, vinegar, which is acidic, would not be effective against the alkaline materials in the battery. Baking soda, while it can neutralize acids, is ineffective for this specific application. Water can dilute the substances but does not neutralize them, potentially leading to more contamination or other issues. Therefore, boric acid is the recommended choice for safely managing nickel-cadmium battery cases.