Explosion Limit

Graphite dust clouds have a minimum ignition energy of 9mJ, with the lowest ignition temperature being 520°C, and the maximum explosion pressure reaching 0.7723MPa.

Carbon dioxide is not a combustible gas, hence the concept of upper and lower explosive limits is irrelevant for it.

In standard testing conditions, the concentration limit at which a combustible gas or vapor mixed with an oxidizing gas leads to an explosion is termed as the explosion limit.