Solutions containing high concentrations of ammonia are considered as corrosive waste.

• A. True
• B. False
• C. Not sure
• D. Not applicable

Answer: (A)

Corrosive waste includes substances that can burn or damage materials. Ammonia in high concentration forms a strongly basic solution (ammonium hydroxide) that is caustic. Such solutions can cause chemical burns to skin and eyes and can corrode metals and many containers. Because of this caustic nature, concentrated ammonia waste is classified as corrosive waste. Regulatory guidelines often use a pH cutoff (around greater than 12.5) to identify corrosive materials, and concentrated ammonia typically exceeds that, reinforcing its corrosive classification. So the statement is correct.