The blast system works through pure game mechanics with no real chemistry involved, which might be interesting for players coming from a science background. When you're building blast damage you'll need to focus on your equipment stats and blast attack skills since that's what actually determines your explosion potential. The faster your weapon hits, the quicker you'll proc those blast triggers which typically deal around 100-150 damage per explosion, depending on the monster's resistances and quest rank. Dual blades are particularly good at this since they hit so frequently but really any weapon with decent attack speed can make blast work well.

Good to know that monster resistances and sharpness modifiers play a huge role in your actual damage output, so keeping your weapon sharp and picking the right targets makes a big difference. You'll want to watch the blastblight buildup carefully since each explosion has a threshold that increases after triggering, making status attack boost skills pretty valuable if you're going for a blast-focused build. The whole system runs on predetermined values and calculations specific to the game's design, so don't get caught up thinking about real-world chemical processes - just focus on hitting those buildup thresholds and maximizing your explosion damage through proper skill investment and weapon choice.