# Rayon (technology)

internal name `rayon` · tier 4 (pY science pack 2, [tier 4](https://factorio.kalzumeus.com/tier/4.md))
HTML page: https://factorio.kalzumeus.com/tech/rayon/

## Cost

500 units of (1 × [pY science pack 2](https://factorio.kalzumeus.com/item/py-science-pack-2.md), 2 × [Logistic science pack](https://factorio.kalzumeus.com/item/logistic-science-pack.md), 3 × [pY science pack 1](https://factorio.kalzumeus.com/item/py-science-pack-1.md), 6 × [Automation science pack](https://factorio.kalzumeus.com/item/automation-science-pack.md)), 90 s each.

## Requires (2)

- [Propene](https://factorio.kalzumeus.com/tech/propene.md)
- [Salt & salt accessories](https://factorio.kalzumeus.com/tech/salts.md)

## Leads to (2)

- [Battery - Stage 2](https://factorio.kalzumeus.com/tech/battery-mk02.md)
- [Intermetallics - Stage 2](https://factorio.kalzumeus.com/tech/intermetallics-mk02.md)

## Unlocks (2 recipes)

### Carbonyl sulfide (`carbon-sulfide`)

- 10 s · tier 4 · productivity modules allowed
- Ingredients: 30 × [Propene](https://factorio.kalzumeus.com/fluid/propene.md), 10 × [Sulfur](https://factorio.kalzumeus.com/item/sulfur.md), 5 × [Coal](https://factorio.kalzumeus.com/item/coal.md)
- Results: 60 × [Carbonyl sulfide](https://factorio.kalzumeus.com/fluid/carbon-sulfide.md)
- Made in: High pressure furnace MK 01, High pressure furnace MK 02, High pressure furnace MK 03, High pressure furnace MK 04
- Unlocked by: [Rayon](https://factorio.kalzumeus.com/tech/rayon.md)

### Rayon (`rayon`)

- 6 s · tier 4 · productivity modules allowed
- Ingredients: 50 × [Carbonyl sulfide](https://factorio.kalzumeus.com/fluid/carbon-sulfide.md), 50 × [Ammonia](https://factorio.kalzumeus.com/fluid/ammonia.md), 10 × [Urea](https://factorio.kalzumeus.com/item/urea.md), 150 × [Sulfuric acid](https://factorio.kalzumeus.com/fluid/sulfuric-acid.md), 15 × [Fiber](https://factorio.kalzumeus.com/item/fiber.md), 5 × [Sodium carbonate](https://factorio.kalzumeus.com/item/sodium-carbonate.md)
- Results: 5 × [Rayon](https://factorio.kalzumeus.com/item/rayon.md)
- Made in: Pulp mill MK 01, Pulp mill MK 02, Pulp mill MK 03, Pulp mill MK 04
- Unlocked by: [Rayon](https://factorio.kalzumeus.com/tech/rayon.md)