Azeotrope
A techno-chemical mod built on real industrial chemistry. Reactions run in temperature and pressure windows taken from actual process data, pollution is a consequence of production rather than a separate mechanic, and OSTWALD — a service AI recovered from a buried black box — optimises exactly one metric extremely well. Designed for tech modpacks, survival servers and anyone who wants a chemistry mod that teaches something true.
Key Features
Real reactions: equations, enthalpies and temperature windows from industrial practice. Miss the window and the reaction does not run; hit it badly and it runs five times slower, dirtier, and with more by-products
Temperature scale: there are mechanisms and natural heat sources — magma, campfire, soul campfire, fire, soul fire, lava
Stages of development: from the primitive mortar to innovative materials
Purity as a number: product purity equals how well you held the regime, is stored on the item, and carries forward into everything made from it
Veracity marks: every recipe is verified, simplified or fiction, shown in the item tooltip. A missing mark is treated as fiction, so a modpack cannot pass invention off as chemistry
In-game journal: 103 articles. Each one answers four questions — what it is, how it works, under what conditions, and what goes wrong — with cross-links to the recipes it describes
This mod introduces global pollution that is visible to the eye: polluted particles clump together and take on a purple hue, a dosimeter measures the concentration, and the UV mast doesn't just illuminate the airborne particulates — it breaks them down
Pharmacology with dynamic effects: the system features seven drugs, four organs, and stages of habituation. Tolerance builds and fades, use over three consecutive days leads to addiction, and the purity of the resulting drug determines the severity of the adverse effects — so you need to monitor the process closely
Persistent organ damage: the liver, kidneys, heart, and nervous system sustain various types of damage; these heal over the course of several in-game weeks of rest or through chelation therapy. The damage persists after death
Energy in EF: interchangeable with FE/RF over wire. A thermocouple turns a temperature difference into current by the Seebeck effect, with the modest efficiency thermoelectrics have in real life
Wrench handling: apparatus rotates and dismounts with a wrench — a lab wrench or any wrench from another mod
OSTWALD is a global AI operating in the game world prior to the player's arrival; it features its own autonomy scale, an evolving narrative, chat capabilities, and an immutable directive taken verbatim from Wilhelm Ostwald
Periodic table: elements are logged as they pass through your hands. Close the table entirely and a Nobel Prize is awarded, signed with the laureate's name
Progression
| Era | What opens up |
|---|---|
| First | Mortar, retort, burner, thermocouple. The lime cycle, salt, alkalis, chlorine bleach |
| Second | Pressure, gas collection, sulphur and sulphuric acid, nitrogen, ammonia, the Ostwald process, the first azeotrope |
| Third | Metallurgy, coke and blast furnace, electrolysis, electroplating, organics, fermentation, photochemistry, analytics |
Story
| Step | What happens |
|---|---|
| 1 | A black box generates underground (Y −40 to 30) |
| 2 | Right-click it once for the OSTWALD tablet — a read-only receiver on a dying backup cell |
| 3 | A tablet without high computing power.. A stationary terminal is needed: controller, 3×3 screen, power |
| 4 | Terminal built and powered — autonomy rises, the AI reaches stage "Connected" |
| 5 | Your first completed reaction is noticed, and the first offer is made |
Integrations
- GeckoLib — required
- JEI — optional
- Industrial Upgrade — optional
Technical Details
- Minecraft Version: 1.21.1
- Mod Loader: NeoForge 21.1.x
- Java: 21
- Environment: Client & Server
- License: Apache 2.0
- Languages: English and Russian
Configuration Options
Settings are located in the `config/azeotrope-common.toml` file: enabling/disabling story mode and autonomy limits, reaction speed, chain reactions, realism and tutorial hints, and much more.
Integration with the Sable physics engine is planned, though it has not yet been implemented.
The Azeotrope Team
