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(in Afterbirth † and Repentance)

Sulfuric Acid is a passive item added in The Binding of Isaac: Afterbirth †.

Effects[ | ]

  • +0.3 damage.
  • Adds a 25% chance to fire acidic tears that destroy obstacles and open doors (including Secret RoomSecret Room entrances) upon contact.

Notes[ | ]

  • The chance to fire an acid tear does not increase with luck.
  • The acidic tears affect static objects like BombBombs, but with some differences:
    • They do not open Bomb ChestBomb Chests.
    • (except in Repentance) They cannot bridge gaps with obstacles.
      • (in Repentance) Gaps are now bridged.
    • (except in Repentance) Poop is not destroyed in one hit.
    • (in Repentance) The mirror leading to the Mirrored World cannot be destroyed.

Interactions[ | ]

  • (except in Repentance) Collectible Brimstone iconBrimstone/Collectible Technology iconTechnology/Collectible Tech X iconTech X: Overrides Sulfuric Acid, stat bonus still applies.
    • (in Repentance) Lasers will sometimes destroy rocks, but will not open doors or secret rooms and has no color change.
  • (in Repentance)Broken PadlockBroken Padlock: Locked doors can be opened by shooting at them.
  • Collectible Dr. Fetus iconDr. Fetus/Collectible Epic Fetus iconEpic Fetus/Collectible Ipecac iconIpecac: Overrides Sulfuric Acid, stat bonus still applies.
  • Collectible Finger! iconFinger!: The finger can destroy rocks when pointing at them.
  • Spirit Sword: Only the energy beams can destroy rocks.
  • Character The Forgotten iconThe Forgotten: The Forgotten's bone club will have colored swings, but these do not have the ability to break rocks.
  • Collectible The Ludovico Technique iconThe Ludovico Technique: The Ludovico tear occasionally becomes acidic.
  • (except in Repentance) Collectible Mom's Knife iconMom's Knife: Overrides Sulfuric Acid, stat bonus still applies.
    • (in Repentance) Knife can destroy obstacles and open doors and secret rooms upon contact with no visual indicator.
  • Collectible Rubber Cement iconRubber Cement: Acidic tears can no longer break objects and doors and just bounce.
  • (except in Repentance) Spectral tears: Acidic tears will no longer be able to destroy obstacles or open secret rooms.
    • (in Repentance) Acidic tears break rocks and open secret rooms, without being broken themselves on impact.
  • (except in Repentance)Collectible Tech.5 iconTech.5/Collectible Technology 2 iconTechnology 2: Only the stat bonus applies to the laser.
    • (in Repentance) Lasers will sometimes destroy rocks, but will not open doors or secret rooms and has no color change.

In-game Footage[ | ]

Trivia[ | ]

  • Sulfuric acid is a strong, corrosive acid, commonly used as a drain cleaner.


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