Hydrochloric Acid (Below Zero)

Hydrochloric Acid is a material crafted using a Fabricator. It is a necessary component to make Polyaniline, which is essential for upgrade modules. In real life, Hydrochloric Acid is extremely dangerous, though it poses no harm to sea life or the player in Subnautica.
Infobox Data
| Property | Value |
|---|---|
| Category | Advanced Materials |
| Description | HCI. Powerful acidic compound. Employ due care. |
| Size | 1 |
| Location | Phi Excavation Site |
| Debug ID | hydrochloricacid |
Recipe
The blueprint for this item is acquired by picking up a Flowering Spore.
Crafting Ingredients
- 3x Sulfur
- 1x Salt Deposit
(Note: Specific ingredient icons are represented by the standard crafting grid structure found in-game.)
Uses in Crafting
Hydrochloric Acid is used to craft:
- Polyaniline (1x Hydrochloric Acid required per unit)
Polyaniline is then used to create various PDA upgrade modules.