Acid was a tough corrosive substance used to break down objects. One notable type of acid was Xenoboric acid, which was used by refineries to break down thorilide during the Age of the Empire. Xenoboric acid was capable of killing sentient beings.
- Star Wars: The Clone Wars – "Brothers" (First appearance)
- Catalyst: A Rogue One Novel
- Adventures in Wild Space: The Steal (Mentioned only)
- A New Dawn
- Aftermath: Life Debt
- Star Wars Special: C-3PO 1: The Phantom Limb