Which of the following is NOT an explosive characteristic?

The characteristic that is deemed NOT to be associated with explosives is the ability to be self-igniting under all conditions. Most explosives require specific conditions for detonation or initiation, such as heat, shock, or friction. Self-ignition implies that an explosive would ignite spontaneously without any external catalyst, which is typically not a property of standard explosives. In reality, explosives must be handled with care to prevent accidental ignition.

The other characteristics listed, on the other hand, reflect more common attributes found in various explosive materials. For instance, explosives that are relatively cheap to produce can result in more accessible military and industrial applications. Additionally, the ability to withstand damp climates is crucial for ensuring the stability and effectiveness of explosives in diverse environments. Lastly, minimum toxicity in storage and handling is essential for safety and regulatory compliance, allowing for safer transport and usage.