# Salt & salt accessories (technology) internal name `salts` · tier 4 (pY science pack 2, [tier 4](https://factorio.kalzumeus.com/tier/4.md)) HTML page: https://factorio.kalzumeus.com/tech/salts/ ## Cost 450 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 (1) - [pY science pack](https://factorio.kalzumeus.com/tech/py-science-pack-2.md) ## Leads to (3) - [Fertilizer - Stage 3](https://factorio.kalzumeus.com/tech/fertilizer-mk03.md) - [Rayon](https://factorio.kalzumeus.com/tech/rayon.md) - [Starch - Stage 2](https://factorio.kalzumeus.com/tech/starch-mk02.md) ## Unlocks (9 recipes) ### Ammonium chloride (`ammonium-chloride`) - 4 s · tier 4 · productivity modules allowed - Ingredients: 200 × [Carbon dioxide](https://factorio.kalzumeus.com/fluid/carbon-dioxide.md), 100 × [Ammonia](https://factorio.kalzumeus.com/fluid/ammonia.md), 200 × [Nitrogen](https://factorio.kalzumeus.com/fluid/nitrogen.md), 20 × [Salt](https://factorio.kalzumeus.com/item/salt.md) - Results: 2 × [Ammonium chloride](https://factorio.kalzumeus.com/item/ammonium-chloride.md), 1 × [Sodium carbonate](https://factorio.kalzumeus.com/item/sodium-carbonate.md) - Made in: Fluidised bed reactor MK 01, Fluidised bed reactor MK 02, Fluidised bed reactor MK 03, Fluidised bed reactor MK 04 - Unlocked by: [Salt & salt accessories](https://factorio.kalzumeus.com/tech/salts.md) ### Hydrogen chloride (`boric-acid-hcl`) - 5 s · tier 4 - Ingredients: 300 × [Boric acid](https://factorio.kalzumeus.com/fluid/boric-acid.md), 10 × [Salt](https://factorio.kalzumeus.com/item/salt.md) - Results: 75 × [Hydrogen chloride](https://factorio.kalzumeus.com/fluid/hydrogen-chloride.md), 200 × [Tailings](https://factorio.kalzumeus.com/fluid/tailings.md) - Made in: Mixer MK 01, Mixer MK 02, Mixer MK 03, Mixer MK 04 - Unlocked by: [Salt & salt accessories](https://factorio.kalzumeus.com/tech/salts.md) ### Sodium hydroxide (`py-sodium-hydroxide`) - 6 s · tier 4 · productivity modules allowed - Ingredients: 50 × [Slaked lime](https://factorio.kalzumeus.com/fluid/slacked-lime.md), 10 × [Salt](https://factorio.kalzumeus.com/item/salt.md) - Results: 10 × [Sodium hydroxide](https://factorio.kalzumeus.com/item/sodium-hydroxide.md), 5 × [Limestone](https://factorio.kalzumeus.com/item/limestone.md) - Made in: Chemical plant, Chemical plant MK 01, Chemical plant MK 02, Chemical plant MK 03, Chemical plant MK 04 - Unlocked by: [Salt & salt accessories](https://factorio.kalzumeus.com/tech/salts.md) ### Slaked lime (`slacked-lime`) - 3 s · tier 4 · productivity modules allowed - Ingredients: 5 × [Lime](https://factorio.kalzumeus.com/item/lime.md), 200 × [Water](https://factorio.kalzumeus.com/fluid/water.md) - Results: 50 × [Slaked lime](https://factorio.kalzumeus.com/fluid/slacked-lime.md) - Made in: Chemical plant, Chemical plant MK 01, Chemical plant MK 02, Chemical plant MK 03, Chemical plant MK 04 - Unlocked by: [Salt & salt accessories](https://factorio.kalzumeus.com/tech/salts.md) ### Sodium bisulfate (`sodium-bisulfate`) - 4 s · tier 4 - Ingredients: 10 × [Salt](https://factorio.kalzumeus.com/item/salt.md), 100 × [Sulfuric acid](https://factorio.kalzumeus.com/fluid/sulfuric-acid.md) - Results: 1 × [Sodium bisulfate](https://factorio.kalzumeus.com/item/sodium-bisulfate.md), 30 × [Hydrogen chloride](https://factorio.kalzumeus.com/fluid/hydrogen-chloride.md) - Made in: Mixer MK 01, Mixer MK 02, Mixer MK 03, Mixer MK 04 - Unlocked by: [Salt & salt accessories](https://factorio.kalzumeus.com/tech/salts.md) ### Sodium carbonate (`sodium-carbonate-1`) - 4 s · tier 4 · productivity modules allowed - Ingredients: 1 × [Sodium sulfate](https://factorio.kalzumeus.com/item/sodium-sulfate.md), 5 × [Coke](https://factorio.kalzumeus.com/item/coke.md), 3 × [Limestone](https://factorio.kalzumeus.com/item/limestone.md) - Results: 1 × [Sodium carbonate](https://factorio.kalzumeus.com/item/sodium-carbonate.md), 50 × [Carbon dioxide](https://factorio.kalzumeus.com/fluid/carbon-dioxide.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: [Salt & salt accessories](https://factorio.kalzumeus.com/tech/salts.md) ### Sodium chlorate (`sodium-chlorate`) - 5 s · tier 4 · productivity modules allowed - Ingredients: 150 × [Steam](https://factorio.kalzumeus.com/fluid/steam.md), 10 × [Salt](https://factorio.kalzumeus.com/item/salt.md) - Results: 5 × [Sodium chlorate](https://factorio.kalzumeus.com/item/sodium-chlorate.md) - Made in: Electrolyzer MK 01, Electrolyzer MK 02, Electrolyzer MK 03, Electrolyzer MK 04 - Unlocked by: [Salt & salt accessories](https://factorio.kalzumeus.com/tech/salts.md) ### Sodium sulfate (`sodium-sulfate`) - 4 s · tier 4 - Ingredients: 5 × [Salt](https://factorio.kalzumeus.com/item/salt.md), 1 × [Sodium bisulfate](https://factorio.kalzumeus.com/item/sodium-bisulfate.md) - Results: 1 × [Sodium sulfate](https://factorio.kalzumeus.com/item/sodium-sulfate.md), 40 × [Hydrogen chloride](https://factorio.kalzumeus.com/fluid/hydrogen-chloride.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: [Salt & salt accessories](https://factorio.kalzumeus.com/tech/salts.md) ### Sodium sulfate (`sodium-sulfate-1`) - 4 s · tier 4 · productivity modules allowed - Ingredients: 10 × [Sodium hydroxide](https://factorio.kalzumeus.com/item/sodium-hydroxide.md), 50 × [Sulfuric acid](https://factorio.kalzumeus.com/fluid/sulfuric-acid.md) - Results: 1 × [Sodium sulfate](https://factorio.kalzumeus.com/item/sodium-sulfate.md), 50 × [Water](https://factorio.kalzumeus.com/fluid/water.md) - Made in: Chemical plant, Chemical plant MK 01, Chemical plant MK 02, Chemical plant MK 03, Chemical plant MK 04 - Unlocked by: [Salt & salt accessories](https://factorio.kalzumeus.com/tech/salts.md)