# Antimony processing - Stage 2 (technology) internal name `antimony-mk02` · tier 4 (pY science pack 2, [tier 4](https://factorio.kalzumeus.com/tier/4.md)) HTML page: https://factorio.kalzumeus.com/tech/antimony-mk02/ ## Cost 550 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) - [Ethylene](https://factorio.kalzumeus.com/tech/ethylene.md) ## Leads to (1) - [Semiconductor doping](https://factorio.kalzumeus.com/tech/semiconductor-doping.md) ## Unlocks (8 recipes) ### Dowfroth 250 (`dowfroth-250`) - 5 s · tier 4 - Ingredients: 50 × [Methanol](https://factorio.kalzumeus.com/fluid/methanol.md), 2 × [Chromium](https://factorio.kalzumeus.com/item/chromium.md), 100 × [Ethylene glycol](https://factorio.kalzumeus.com/fluid/ethylene-glycol.md) - Results: 100 × [Dowfroth 250](https://factorio.kalzumeus.com/fluid/dowfroth-250.md) - Made in: Mixer MK 01, Mixer MK 02, Mixer MK 03, Mixer MK 04 - Unlocked by: [Antimony processing - Stage 2](https://factorio.kalzumeus.com/tech/antimony-mk02.md) ### Lead acetate (`lead-acetate`) - 10 s · tier 4 · productivity modules allowed - Ingredients: 3 × [Lead plate](https://factorio.kalzumeus.com/item/lead-plate.md), 50 × [Acetic acid](https://factorio.kalzumeus.com/fluid/acetic-acid.md), 50 × [Hydrogen peroxide](https://factorio.kalzumeus.com/fluid/hydrogen-peroxide.md) - Results: 1 × [Lead acetate](https://factorio.kalzumeus.com/item/lead-acetate.md) - Made in: Mixer MK 01, Mixer MK 02, Mixer MK 03, Mixer MK 04 - Unlocked by: [Antimony processing - Stage 2](https://factorio.kalzumeus.com/tech/antimony-mk02.md) ### Crushed antimony (`sb-crushed`) - 10 s · tier 4 - Ingredients: 5 × [Antimony (grade 4)](https://factorio.kalzumeus.com/item/sb-grade-04.md), 3 × [Lime](https://factorio.kalzumeus.com/item/lime.md) - Results: 1 × [Crushed antimony](https://factorio.kalzumeus.com/item/sb-crushed.md) - Made in: Ball mill MK 01, Ball mill MK 02, Ball mill MK 03, Ball mill MK 04 - Unlocked by: [Antimony processing - Stage 2](https://factorio.kalzumeus.com/tech/antimony-mk02.md) ### Antimony dust (`sb-dust`) - 10 s · tier 4 - Ingredients: 2 × [Crushed antimony](https://factorio.kalzumeus.com/item/sb-crushed.md) - Results: 1 × [Antimony dust](https://factorio.kalzumeus.com/item/sb-dust.md), 0.5 × [Antimony (grade 4)](https://factorio.kalzumeus.com/item/sb-grade-04.md) (50% chance) - Made in: Classifier MK 01, Classifier MK 01 (Legacy), Classifier MK 02, Classifier MK 02 (Legacy), Classifier MK 03, Classifier MK 03 (Legacy), Classifier MK 04, Classifier MK 04 (Legacy) - Unlocked by: [Antimony processing - Stage 2](https://factorio.kalzumeus.com/tech/antimony-mk02.md) ### Antimony oxide (`sb-oxide-02`) - 10 s · tier 4 · productivity modules allowed - Ingredients: 100 × [Antimony Pulp 02](https://factorio.kalzumeus.com/fluid/sb-pulp-02.md), 50 × [Oxygen](https://factorio.kalzumeus.com/fluid/oxygen.md), 3 × [Plastic bar](https://factorio.kalzumeus.com/item/plastic-bar.md) - Results: 3 × [Antimony oxide](https://factorio.kalzumeus.com/item/sb-oxide.md) - Made in: Basic oxygen furnace MK 01, Basic oxygen furnace MK 02, Basic oxygen furnace MK 03, Basic oxygen furnace MK 04 - Unlocked by: [Antimony processing - Stage 2](https://factorio.kalzumeus.com/tech/antimony-mk02.md) ### Antimony oxide (`sb-oxide-02a`) - 10 s · tier 4 · productivity modules allowed - Ingredients: 50 × [Antimony 58.3% Concentrate](https://factorio.kalzumeus.com/fluid/sb-58-conc.md), 100 × [Oxygen](https://factorio.kalzumeus.com/fluid/oxygen.md), 10 × [Plastic bar](https://factorio.kalzumeus.com/item/plastic-bar.md) - Results: 10 × [Antimony oxide](https://factorio.kalzumeus.com/item/sb-oxide.md) - Made in: Basic oxygen furnace MK 01, Basic oxygen furnace MK 02, Basic oxygen furnace MK 03, Basic oxygen furnace MK 04 - Unlocked by: [Antimony processing - Stage 2](https://factorio.kalzumeus.com/tech/antimony-mk02.md) ### Antimony Pulp 01 (`sb-pulp-01`) - 10 s · tier 4 - Ingredients: 2 × [Antimony dust](https://factorio.kalzumeus.com/item/sb-dust.md), 1 × [Lead acetate](https://factorio.kalzumeus.com/item/lead-acetate.md), 25 × [Fish oil](https://factorio.kalzumeus.com/fluid/fish-oil.md) - Results: 200 × [Antimony Pulp 01](https://factorio.kalzumeus.com/fluid/sb-pulp-01.md) - Made in: Agitator MK 01, Agitator MK 02, Agitator MK 03, Agitator MK 04 - Unlocked by: [Antimony processing - Stage 2](https://factorio.kalzumeus.com/tech/antimony-mk02.md) ### Antimony Pulp 02 (`sb-pulp-02`) - 15 s · tier 4 - Ingredients: 100 × [Antimony Pulp 01](https://factorio.kalzumeus.com/fluid/sb-pulp-01.md), 50 × [Pressurized air](https://factorio.kalzumeus.com/fluid/pressured-air.md), 50 × [Dowfroth 250](https://factorio.kalzumeus.com/fluid/dowfroth-250.md) - Results: 50 × [Antimony Pulp 02](https://factorio.kalzumeus.com/fluid/sb-pulp-02.md), 10 × [Antimony 58.3% Concentrate](https://factorio.kalzumeus.com/fluid/sb-58-conc.md) (20% chance of 50) - Made in: Flotation cell MK 01, Flotation cell MK 02, Flotation cell MK 03, Flotation cell MK 04 - Unlocked by: [Antimony processing - Stage 2](https://factorio.kalzumeus.com/tech/antimony-mk02.md)