# Hydrofluoric acid

Pyanodons fluid · internal name `hydrofluoric-acid` · first craftable in tier 2 (Logistic science pack, [tier 2](https://factorio.kalzumeus.com/tier/2.md))
HTML page: https://factorio.kalzumeus.com/fluid/hydrofluoric-acid/

## Produced by (2 recipes)

### Hydrofluoric acid (`hydrofluoric-acid`)

- 5 s · tier 6 · productivity modules allowed
- Ingredients: 75 × [Sulfuric acid](https://factorio.kalzumeus.com/fluid/sulfuric-acid.md), 5 × [Powdered phosphate rock](https://factorio.kalzumeus.com/item/powdered-phosphate-rock.md), 50 × [Prepared quartz](https://factorio.kalzumeus.com/fluid/prepared-quartz.md)
- Results: 200 × [Hydrofluoric acid](https://factorio.kalzumeus.com/fluid/hydrofluoric-acid.md)
- Made in: Mixer MK 01, Mixer MK 02, Mixer MK 03, Mixer MK 04
- Unlocked by: [Uranium processing - Stage 1](https://factorio.kalzumeus.com/tech/uranium-mk01.md)

### Phosphorous acid distillation (`phosphoric-acid`)

- 5 s · tier 2 · productivity modules allowed
- Ingredients: 40 × [Phosphorous acid](https://factorio.kalzumeus.com/fluid/phosphorous-acid.md), 120 × [Steam](https://factorio.kalzumeus.com/fluid/steam.md), 10 × [Wood](https://factorio.kalzumeus.com/item/wood.md)
- Results: 20 × [Phosphoric acid](https://factorio.kalzumeus.com/fluid/phosphoric-acid.md), 10 × [Phosphine gas](https://factorio.kalzumeus.com/fluid/phosphine-gas.md), 10 × [Hydrofluoric acid](https://factorio.kalzumeus.com/fluid/hydrofluoric-acid.md)
- Made in: Destructive distillation column MK 01, Destructive distillation column MK 02, Destructive distillation column MK 03, Destructive distillation column MK 04
- Unlocked by: [Phosphorous processing](https://factorio.kalzumeus.com/tech/phosphorous-processing.md)

## Used in (2 recipes)

- Fluorine gas (`fluorine-gas`, tier 2) → [Fluorine gas](https://factorio.kalzumeus.com/fluid/fluorine-gas.md)
- Uranium hexafluoride (`yellow-cake-uf6`, tier 6) → [Uranium hexafluoride](https://factorio.kalzumeus.com/fluid/uf6.md)