# Arsenic

Pyanodons item · internal name `arsenic` · stack size 100 · first craftable in tier 7 (Production science pack, [tier 7](https://factorio.kalzumeus.com/tier/7.md))
HTML page: https://factorio.kalzumeus.com/item/arsenic/

## Produced by (1 recipes)

### Arsenic (`arsenic`)

- 20 s · tier 7
- Ingredients: 10 × [Iron ore](https://factorio.kalzumeus.com/item/iron-ore.md), 10 × [Copper ore](https://factorio.kalzumeus.com/item/copper-ore.md), 20 × [Rich clay](https://factorio.kalzumeus.com/item/rich-clay.md), 10 × [Lead ore](https://factorio.kalzumeus.com/item/ore-lead.md), 10 × [Antimony ore](https://factorio.kalzumeus.com/item/antimonium-ore.md)
- Results: 1 × [Arsenic](https://factorio.kalzumeus.com/item/arsenic.md), 5 × [Iron oxide](https://factorio.kalzumeus.com/item/iron-oxide.md)
- Made in: Smelter MK 01, Smelter MK 02, Smelter MK 03, Smelter MK 04
- Unlocked by: [Large scale integrated circuits](https://factorio.kalzumeus.com/tech/integrated-circuits-3.md)

## Used in (2 recipes)

- Gallium arsenide (`gaas`, tier 7) → [Gallium arsenide](https://factorio.kalzumeus.com/item/gaas.md)
- Lightly n-doped silicon (`light-n2`, tier 7) → [Lightly n-doped silicon](https://factorio.kalzumeus.com/item/light-n.md)