Which of the following is NOT a characteristic considered in the hazard classification of explosives?

In the hazard classification of explosives, factors that influence the potential risks associated with the materials are prioritized. The correct choice—cost of the explosive—is not considered a relevant characteristic in this classification process.

Hazard classification focuses on aspects such as the stability of the explosive, which relates to how likely it is to undergo unintended reactions under certain conditions. The type of detonation is crucial for understanding the manner in which an explosive could behave — whether through a rapid combustion, detonation, or deflagration — affecting how it is handled and stored. Additionally, potential environmental impact is considered because explosives can have significant consequences for ecosystems and public health, further necessitating a thorough risk assessment.

In summary, while cost is important for procurement and budgeting, it does not affect the safety or hazard classification directly, making it the correct answer to the question.