Calamity Mod Wiki
Sulphuric Acid Cannon
  • Sulphuric Acid Cannon.png
Stack digit 1.png
Damage132 Ranged
Knockback6 (Average)
Critical chance4%
Use time18 Very Fast
TooltipFires an acidic bubble that sticks to enemies and emits sulphuric gas
Inflicts DebuffVenomVenom
100% chance

Debuff duration10 seconds
Debuff tooltipLosing life
RarityRarity Level: 13
Sell 28 Gold Coin.png
Projectiles created
Sulphuric Acid Bubble
Sulphuric Acid Bubble
Sulphuric Acid Mist
Sulphuric Acid Mist
Dropped by
Mauler (After Polterghast has been defeated)133.33%

Attacking with the Sulphuric Acid Cannon

The Sulphuric Acid Cannon is a post-Moon Lord gun that is dropped by the Mauler after Polterghast has been defeated. It fires sulphuric orbs at enemies. The bubbles shot by this weapon will stick on to enemies hit. After a few seconds, sulphuric mist puffs will occasionally fly out from the orbs in random directions; these do not travel through tiles. This repeats a few times before the bubbles evaporate.

The bubbles shot by this weapon inflict the Venom debuff on contact with, and stick to, any enemies they strike. Unlike most weapons that deal Venom, the damage over time dealt by the bubbles stack. Up to three bubbles can be attached on an enemy at once, similar to Daybreak spears, for a maximum of 90 damage per second. This can stack with the Lionfish's similar mechanics for a maximum of 390 damage per second. The sulphuric mist puffs do not inflict a modified Venom debuff and deal 6 damage per second as usual.

Its best modifier is Unreal.


  • The bubbles shot by this weapon remove Venom immunity from all enemies that do not use the Worm AI.
    • Although The Devourer of Gods is a worm, it does not follow the Worm AI, which means Sulphuric Acid Cannon removes The Devourer of Gods' Venom immunity.