History

Carbon Dioxide

# Carbon Dioxide


:::infobox
| Property | Value |
|----------|-------|
| Gas Name | Carbon Dioxide (CO₂) |
| Specific Heat | 28.2 J/mol·K |
| Latent Heat | 600 J/mol |
| Minimum Condensation | 517 kPa at 217.82 K |
| Max Liquid Temperature | 6000 kPa at 265 K |
| Freezing Point | 217.82 K |

![Carbon Dioxide](icon-carbondioxide.png)
:::

## Description

> *"You breath it out, [plants](/wiki/plants) breath it in. They don't grow without it. You can use items placed in [Gas Filter](/wiki/filter) slots to remove this from the atmosphere. Carbon Dioxide has a moderately high specific heat, meaning it makes a good coolant for devices like the [Wall Cooler](/wiki/wall-cooler). [Water](/wiki/water) is better, but usually has more important uses."*
> — Stationpedia

**Carbon Dioxide**, also referred to as **CO₂**, is a non-flammable gas found in some atmospheres naturally (such as [Mars](/wiki/worlds#mars)).  It can also be produced by burning [Fuel](/wiki/fuel) or [Coal](/wiki/coal), smelting most ores (e.g. [Iron](/wiki/ore-iron), [Copper](/wiki/ore-copper), and [Silicon](/wiki/ore-silicon)) and through human respiration.

## Details

Carbon Dioxide will condense into **Liquid Carbon Dioxide** starting at 265 K / -8.15 °C. With such a low temperature requirement, most setups will store Carbon Dioxide as a gas and use Liquid Carbon Dioxide as a [coolant](/wiki/coolant).

Carbon Dioxide is required for most plants to grow. Plants will inhale the Carbon Dioxide to create [Oxygen](/wiki/oxygen) which can be harvested using [vents](/wiki/active-vent). Stationeers should monitor their plants to ensure they always have enough Carbon Dioxide as, given enough time, they can convert all of it into Oxygen.

Carbon Dioxide has an isochoric molar heat capacity of 28.2 J/mol·K, making it a superior coolant to [Pollutant](/wiki/pollutant) outside applications involving phase change where Pollutant can make use of its greater latent heat capacity. Both are greatly surpassed by water, though water is harder to find and has more important uses.

## Sources

You can collect Carbon Dioxide from the following sources:

| Source | Amount |
|---|---|
| [Coal Ore](/wiki/ore-coal) | **10 mol** |
| [Charcoal](/wiki/charcoal) | 3 mol |
| [Copper Ore](/wiki/ore-copper) | 1 mol |
| [Gold Ore](/wiki/ore-gold) | 0.2 mol |
| [Iron Ore](/wiki/ore-iron) | 0.5 mol |
| [Lead Ore](/wiki/ore-lead) | 0.4 mol |
| [Nickel Ore](/wiki/ore-nickel) | 1 mol |
| [Silicon Ore](/wiki/ore-silicon) | 1 mol |