Stationeers Community Wiki - User contributions [en]

Hydrazine

2026-04-03T05:08:21Z

Jebadiha: Fixed incorrect description stating Hydrazine was hypergolic & added some links.

{{Infobox gas
| gas_name = Hydrazine
| image = Icon-Hydrazine.png
| heat = 48.4 J/mol*K 
| latent_heat = 4000 J/mol 
| minimum_condensation = 6.3 kPa at 246.236749353 K
| max_liquid = 6000 kPa at 520.807708414 K 
| freezes = 246.236749353 K
| autoignition_temperature = 520.807708414 K
| coefficient_a = 8E-22 
| coefficient_b = 9.15642808045339 
| thermal_efficiency = 0.08 
| enthalpy = 306 kJ / mol 
| liquid_volume = 30 L/kmol 
| molar_mass = 32 g/mol
| heat_capacity_ratio = 1.26 
}}

[[File:Phase Diagram of Hydrazine.png|thumb|Phase Diagram of Hydrazine]]

== Description ==
<blockquote><q>Hydrazine is the perfect fuel for space exploration as it requires no oxidiser to combust, only needing heat or a spark. It is more commonly stored in its liquid form Liquid Hydrazine which is stable at [[room]] temperature. Hydrazine is extremely reactive and will violently combust in the presence of an oxidiser. It is extremely toxic to all forms of life.</q> 
'''- [[Stationpedia]]'''</blockquote>

'''Hydrazine''' or '''N2H4''' is a [[wikipedia:Monopropellant|Monopropellant]] that ignites at 520.8 K (247.7°C), or when sparked.

=== Combustion ===
* {{Combustion|Fuel=Hydrazine, 1|OutputA=Pollutant, 4|ShowAutoignition=true}}

== Usage ==
''See also: [[Fuel]]''

Hydrazine has a low [[wikipedia:Heat_of_combustion|combustion enthalpy]], making it suboptimal for [[rocketry]] applications that require high performance. However, being a monopropellant allows its use in a [[Pumped Gas Engine]] or [[Pressure-Fed Liquid Engine]] without requiring any premixing, simplifying rocket and/or launch pad design.

===Notes===

* Hydrazine is extremely toxic to all forms of life, causing damage in concentrations above 0.1% for [[plants]], or 1kPa for Humans and Zrilians. The increased toxicity to plants is only shared with [[Hydrochloric Acid]].

==Sources==
Hydrazine can be acquired from [[traders]].
{| class="wikitable"
|-
! Source !! Amount
|-
|? || ?
|}

== References ==
<References />
{{:Gases and Liquids/Menu}}
[[Category:Gas]][[Category:Liquid]]

Nitrous Oxide

2026-04-03T03:53:39Z

Jebadiha: Removed phase diagram (Generated with the wrong values - Will re-upload a corrected version soon)

{{Infobox gas
| gas_name = Nitrous Oxide
| image = Icon-nitrousoxide.png
| heat = 37.2 J/mol*K 
| latent_heat = 4000 J/mol 
| minimum_condensation = 800 kPa at 252.1 K 
| max_liquid = 2000 kPa at 430.6 K 
| freezes = 252.1 K
| liquid_volume = 26 L/kmol
| molar_mass = 46 g/mol
}}

= Description =
{{Stationpedia|Nitrous oxide is a reactive gas that will knock players out if inhaled. It acts as an oxidizer for combustion, and allows [[Volatiles|volatiles]] to burn significantly hotter, faster, and at a lower autoignition temperature. It can be produced in an energy intensive process inside of a [[Nitrolyzer]].}}

Nitrous Oxide, also referred to as N2O or Nitrous, is a reactive [[Gas|gas]] primarily used for its role in the creation of [[Fuel#Gas_Fuel|Superfuel]]. Nitrous Oxide naturally occurs when smelting [[Ore_(Lead)|lead]] and [[Ore_(Silver)|silver]]. It can also be acquired by [[Ice Crusher|crushing]] [[Nitrice]]

= Details =
Nitrous Oxide will condense into Liquid Nitrous Oxide at a very low [[pressure]] and temperature. Due to this, Nitrous Oxide is best stored as a liquid above {{Temperature|252}}. [[Stationeers]] are advised to monitor pipelines when setting up Nitrous Oxide gas systems as ruptures may occur if the temperature remains unchecked.

Nitrous Oxide can be combined with [[Methane]] at a 1:1 ratio to create [[Fuel#Gas_Fuel|Superfuel]]. Superfuel combusts at {{Temperature|323.15}}, burning much hotter and quicker than [[Fuel#Gas_Fuel|Fuel]].

While Nitrous Oxide can be acquired through smelting [[ores]] and crushing ice, it can also be created via the [[Nitrolyzer]] using a combination of [[Nitrogen]] and [[Oxygen]].

== Notes ==
* For [[rocketry]], Nitrous Oxide has a mass of about 21.74 mol/kg, giving the 1:1 [[fuel]] mix an average molar mass of ~32.258 mol/kg compared to 62.5 for a [[Fuel#Gas_Fuel|Fuel]] mix. 
* Many Nitrous Oxide storage builds will include a [[Phase Change guide#Heating_.2F_Cooling_with_phase_change_loops|condensation trap]] to avoid [[pipe]] ruptures.
* [[Alien Mushroom]]s breathe Nitrous Oxide and exhale oxygen and nitrogen.

== Sources ==
You can collect Nitrous Oxide from the following sources:
{| class="wikitable"
|-
! Source !! Amount
|-
| [[Nitrice]] || 2.5 mol
|-
| [[Silver]] || 1 mol
|-
| [[Lead]] || 0.4 mol
|}

== Changes ==

{{Updates header}}
{{Updates|link=https://store.steampowered.com/news/app/544550/view/3417686819606491235?l=english|version=0.2.3499.17067|desc=Nitrous Oxide was added as an oxifier, introducing Superfuel}}
{{Updates|link=https://store.steampowered.com/news/app/544550/view/3929910003151657166?l=english|version=0.2.1772.8154|desc=Added Nitrous Oxide to Silver and Lead ore output}}
{{Updates|link=https://store.steampowered.com/news/app/544550/view/3929910003151657403?l=english|version=0.1.1671.7828|desc=Added Nitrous Oxide. Currently inert, other than at certain concentrations will cause the player to take (progressively more) stun damage. Only the first pass, will be utilized more with the implementation of surgery later.}}
{{Updates footer}}

{{:Gases and Liquids/Menu}}

Hydrazine

2026-03-26T04:47:20Z

Jebadiha: Added Phase Diagram

{{Infobox gas
| gas_name = Hydrazine
| image = Icon-Hydrazine.png
| heat = 48.4 J/mol*K 
| latent_heat = 4000 J/mol 
| minimum_condensation = 6.3 kPa at 246.236749353 K
| max_liquid = 6000 kPa at 520.807708414 K 
| freezes = 246.236749353 K
| autoignition_temperature = 520.807708414 K
| coefficient_a = 8E-22 
| coefficient_b = 9.15642808045339 
| thermal_efficiency = 0.08 
| enthalpy = 306 kJ / mol 
| liquid_volume = 30 L/kmol 
| molar_mass = 32 g/mol
| heat_capacity_ratio = 1.26 
}}

[[File:Phase Diagram of Hydrazine.png|thumb|Phase Diagram of Hydrazine]]

== Description ==
<blockquote><q>Hydrazine is the perfect fuel for space exploration as it requires no oxidiser to combust, only needing heat or a spark. It is more commonly stored in its liquid form Liquid Hydrazine which is stable at [[room]] temperature. Hydrazine is extremely reactive and will violently combust in the presence of an oxidiser. It is extremely toxic to all forms of life.</q> 
'''- [[Stationpedia]]'''</blockquote>

'''Hydrazine''' or '''N2H4''' is a [[Hypergol]]. Hydrazine will spontaneously autoignite at 520.8 K (247.7°C), or at any temperature in the presence of [[Oxygen]], [[Ozone]] or [[Nitrous Oxide]].

=== Combustion ===
* {{Combustion|Fuel=Hydrazine, 1|OutputA=Pollutant, 4|ShowAutoignition=true}}

== Usage ==
''See also: [[Fuel]]''

Hydrazine has a low combustion enthalpy, making it suboptimal for [[rocketry]] applications that require high performance. However, the fact it is a monopropellant allows its use in a [[Pumped Gas Engine]] or [[Pressure-Fed Liquid Engine]] without requiring any premixing, simplifying rocket and/or launch pad design.

===Notes===

* Hydrazine is extremely toxic to all forms of life, causing damage in concentrations above 0.1% for [[plants]], or 1kPa for Humans and Zrilians. The increased toxicity to plants is only shared with [[Hydrochloric Acid]].

==Sources==
Hydrazine can be acquired from [[traders]].
{| class="wikitable"
|-
! Source !! Amount
|-
|? || ?
|}

== References ==
<References />
{{:Gases and Liquids/Menu}}
[[Category:Gas]][[Category:Liquid]]

Hydrochloric Acid

2026-03-26T04:46:06Z

Jebadiha: Added Phase Diagram

{{Infobox gas|gas_name=Hydrochloric Acid|image=Icon-HydrochloricAcid.png|heat=37 J/K|latent_heat=1 kJ/mol|minimum_condensation=6.3 kPa at {{Temperature|247}}|max_liquid=1000 kPa at {{Temperature|431}}|freezes={{Temperature|247}}|liquid_volume=28 L/Kmol|molar_mass=36 g/mol}}

[[File:Phase Diagram of Hydrochloric Acid.png|thumb|Phase Diagram of Hydrochloric Acid]]

== Description ==
'''Hydrochloric Acid''' is an extremely toxic gas that is a liquid at [[room]] temperature and [[pressure]].

It is toxic to [[plants]] at concentrations as low as 0.1%, a property that is only shared by [[Hydrazine]]. It's also toxic to humans, zrilians and chickens at concentrations above 1kPa.

== Usage ==
Its moderately specific heat makes it a thermal buffer when [[Nitrous Oxide]], [[Water]] or [[Silanol]] aren't available in sufficient quantities. For phase change, [[Nitrous]] Oxide, Silanol and [[Pollutant]] are generally considered better options.

== Sources ==
Hydrochloric Acid can be found on the [[Atmosphere]] of [[Venus]], as well as acquired from [[traders]] as an impurity present on dirty [[volatiles]].{{:Gases and Liquids/Menu}}

Liquid Sodium Chloride

2026-03-26T04:45:26Z

Jebadiha: Added Phase Diagram

{{Infobox gas
| gas_name = Liquid Sodium Chloride
| image = Icon-LiquidSodiumChloride.png
| heat = 130 J/mol*K 
| latent_heat = 16000 J/mol 
| minimum_condensation = 6.3 kPa at 605.903458297 K
| max_liquid = 515 kPa at 2799.31057833 K
| coefficient_a = 6.211737044295E-08 
| coefficient_b = 2.8774143233482707 
| freezes = 605.903458297 K
| liquid_volume = 40 L/kmol
| molar_mass = 101 g/mol
| heat_capacity_ratio = 1.26 
| thermal_efficiency = 0 
}}

[[File:Phase Diagram of Sodium Chloride.png|thumb|Phase Diagram of Sodium Chloride]]

==Description==
<blockquote><q>Liquid Sodium Chloride is unique in that it will remain in liquid form at extremely high temperatures making it an excellent medium for storing heat [[energy]].</q> 
'''- [[Stationpedia]]'''</blockquote>

== Usage ==
Liquid Sodium Chloride has the highest critical point and highest molar heat capacity of all liquids currently in-game, making it excellent for high-temperature heat storage.

Its extremely low in-[[world]] liquid density (0.02215466833 mol/in-world L, 45.1372137513 in-world L/mol) and low evaporation [[pressure]] also make it an interesting candidate for low-[[power]] pumping systems. However, it decomposes into [[Pollutant]] on evaporation, losing considerable amounts of stored heat energy in the process. Care must be taken to avoid uncontrolled spills as small quantities can easily flood and overpressurize rooms, with only 177 mols (~7 L in [[pipes]]) being required to fill a world [[grid]] cell.

== Sources ==

Can be acquired as [[Salt]] from ore [[traders]].
{| class="wikitable"
|-
! Source !! Amount
|-
|[[Salt]]|| 50 mol
|}

== Notes ==
TBW
{{:Gases and Liquids/Menu}}

Silanol

2026-03-26T04:44:59Z

Jebadiha: Added Phase Diagram

{{Infobox gas
| gas_name = Silanol
| image = Icon-Silanol.png
| heat = 101 J/mol*K 
| latent_heat = 10000 J/mol 
| minimum_condensation = 516 kPa at 163.68638101 K
| max_liquid = 6000 kPa at 821.669458033 K
| coefficient_a = 0.22176555607618392 
| coefficient_b = 1.5206578718752168 
| freezes = 163.68638101 K
| liquid_volume = 160 L/kmol
| molar_mass = 166 g/mol
| heat_capacity_ratio = 1.26 
| thermal_efficiency = 0.05 
}}

[[File:Phase Diagram of Silanol.png|thumb|Phase Diagram of Silanol]]

==Description==
<blockquote><q>Silanol is the premium refrigerant gas for utilizing [[Phase Change Mechanics|phase change]] to pump heat. With its extremely high heat capacity it also makes an excellent [[coolant]], able to absorb large quantities of heat [[energy]] with minimal temperature fluctuation. </q> 
'''- [[Stationpedia]]'''</blockquote>

== Usage ==
Silanol is best used as a phase-change coolant in high-temperature-range loops. It has the highest latent heat per mol of all reversible phase-change materials, reducing the energy cost of compressing it into a liquid. Its high critical temperature of {{Temperature|Temperature=821.669458033}} allows it to still liquify and eject heat even on [[Venus]] (but not during [[Vulcan]] daytime).

However, its extremely low liquid molar density of just 6.25 mols/L (0.16 L/mol) limits how quickly it can be pumped into an [[Evaporation Chamber]], for a maximum achievable evaporation capacity of 15.625 kJ at a 0.25 L/tick flow rate. For medium-temperature applications, a [[Water]] or [[Nitrous Oxide]] loop can provide superior performance.

However, This does not apply to custom-made evaporation chambers as they can compensate for this shortcoming with liquid intakes capable of a higher flow rate.

== Sources ==
Silanol is planned to be obtained through late-game synthesis[https://www.youtube.com/watch?v=i-Qk14wsDTo]. It can also be acquired from Gas traders.

{| class="wikitable"
|-
! Source !! Amount
|-
| ? || ?
|}

== Notes ==
* Internal game constants refer to it as [[Coolant]].
* Silanol is toxic to all lifeforms, causing damage when breathed at partial pressures above 1kPa.

{{:Gases and Liquids/Menu}}

Alcohol

2026-03-26T04:44:28Z

Jebadiha: Added Phase Diagram

{{Infobox gas
| gas_name = Alcohol
| image = Icon-LiquidAlcohol.png
| heat = 33 J/mol*K 
| latent_heat = 2000 J/mol 
| minimum_condensation = 6.3 kPa at 231.630843984 K
| max_liquid = 1000 kPa at 423.675171692 K
| coefficient_a = 9e-20
| coefficient_b = 8.391884446078986
| autoignition_temperature = 400°C
| freezes = 231.630843984 K
| liquid_volume = 58 L/kmol
| enthalpy = 566 kJ/mol
| molar_mass = 46 g/mol
| heat_capacity_ratio = 1.2
| thermal_efficiency = 0 
|evaporation_ratio=1.6176470588235294}}

[[File:Phase Diagram of Alcohol.png|thumb|Phase Diagram of Alcohol]]

==Description==
<blockquote><q>Alcohol is a relatively safe and versatile volatile liquid at [[room]] temperatures. When exposed to vacuum it will decompose into [[Methane]] to form a small head [[pressure]].</q> 
'''- [[Stationpedia]]'''</blockquote>

== Usage ==
Alcohol has the highest enthalpy of combustion per mol of all [[Fuel]]s at 566 kJ/mol, but the high amounts of [[Water|Steam]] generated as combustion byproducts limit its maximum achievable combustion temperature.
 It is also relatively safe to be used in a [[Pressure-Fed Liquid Engine]] with [[Nitrous Oxide]] because it autoignites at 150°C.
 However, it evaporates into [[Methane]] which autoignites at a lower temperature.

== Combustion ==
*{{Combustion|Fuel=Alcohol, 1|Oxidizer=Oxygen, 3|OutputA=Carbon Dioxide, 4|OutputB=Steam, 2|ShowAutoignition=true}}
*{{Combustion|Fuel=Alcohol, 1|Oxidizer=Nitrous Oxide, 2|OutputA=Nitrogen, 4|OutputB=Steam, 2|ShowAutoignition=true}}
*{{Combustion|Fuel=Alcohol, 1|Oxidizer=Ozone, 2|OutputA=Carbon Dioxide, 1|OutputB=Steam, 3|ShowAutoignition=true}}

== Sources ==
Alcohol can be obtained by fermenting Crops, Seeds, [[Biomass]] or [[Decayed Food]] in the [[Fermenter]].
{{:Fermenter}}

== Notes ==
* Internal game constants refer to it as Ethanol.

{{:Gases and Liquids/Menu}}

Nitrous Oxide

2026-03-26T04:42:18Z

Jebadiha: Added Phase Diagram

{{Infobox gas
| gas_name = Nitrous Oxide
| image = Icon-nitrousoxide.png
| heat = 37.2 J/mol*K 
| latent_heat = 4000 J/mol 
| minimum_condensation = 800 kPa at 252.1 K 
| max_liquid = 2000 kPa at 430.6 K 
| freezes = 252.1 K
| liquid_volume = 26 L/kmol
| molar_mass = 46 g/mol
}}

[[File:Phase Diagram of Nitrous Oxide.png|thumb|Phase Diagram of Nitrous Oxide]]

= Description =
{{Stationpedia|Nitrous oxide is a reactive gas that will knock players out if inhaled. It acts as an oxidizer for combustion, and allows [[Volatiles|volatiles]] to burn significantly hotter, faster, and at a lower autoignition temperature. It can be produced in an energy intensive process inside of a [[Nitrolyzer]].}}

Nitrous Oxide, also referred to as N2O or Nitrous, is a reactive [[Gas|gas]] primarily used for its role in the creation of [[Fuel#Gas_Fuel|Superfuel]]. Nitrous Oxide naturally occurs when smelting [[Ore_(Lead)|lead]] and [[Ore_(Silver)|silver]]. It can also be acquired by [[Ice Crusher|crushing]] [[Nitrice]]

= Details =
Nitrous Oxide will condense into Liquid Nitrous Oxide at a very low [[pressure]] and temperature. Due to this, Nitrous Oxide is best stored as a liquid above {{Temperature|252}}. [[Stationeers]] are advised to monitor pipelines when setting up Nitrous Oxide gas systems as ruptures may occur if the temperature remains unchecked.

Nitrous Oxide can be combined with [[Volatiles]] at a 1:1 ratio to create [[Fuel#Gas_Fuel|Superfuel]]. Superfuel combusts at {{Temperature|323.15}}, burning much hotter and quicker than [[Fuel#Gas_Fuel|Fuel]].

While Nitrous Oxide can be acquired through smelting [[ores]] and crushing ice, it can also be created via the [[Nitrolyzer]] using a combination of [[Nitrogen]] and [[Oxygen]].

== Notes ==
* For [[rocketry]], Nitrous Oxide has a mass of about 21.74 mol/kg, giving the 1:1 [[fuel]] mix an average molar mass of ~32.258 mol/kg compared to 62.5 for a [[Fuel#Gas_Fuel|Fuel]] mix. 
* Many Nitrous Oxide storage builds will include a [[Phase Change guide#Heating_.2F_Cooling_with_phase_change_loops|condensation trap]] to avoid [[pipe]] ruptures.
* [[Alien Mushroom]]s breathe Nitrous Oxide and exhale oxygen and nitrogen.

== Sources ==
You can collect Nitrous Oxide from the following sources:
{| class="wikitable"
|-
! Source !! Amount
|-
| [[Nitrice]] || 2.5 mol
|-
| [[Silver]] || 1 mol
|-
| [[Lead]] || 0.4 mol
|}

== Changes ==

{{Updates header}}
{{Updates|link=https://store.steampowered.com/news/app/544550/view/3417686819606491235?l=english|version=0.2.3499.17067|desc=Nitrous Oxide was added as an oxifier, introducing Superfuel}}
{{Updates|link=https://store.steampowered.com/news/app/544550/view/3929910003151657166?l=english|version=0.2.1772.8154|desc=Added Nitrous Oxide to Silver and Lead ore output}}
{{Updates|link=https://store.steampowered.com/news/app/544550/view/3929910003151657403?l=english|version=0.1.1671.7828|desc=Added Nitrous Oxide. Currently inert, other than at certain concentrations will cause the player to take (progressively more) stun damage. Only the first pass, will be utilized more with the implementation of surgery later.}}
{{Updates footer}}

{{:Gases and Liquids/Menu}}

Water

2026-03-26T04:41:32Z

Jebadiha: Added Phase Diagram

{{Infobox gas
| gas_name = Water
| image = icon-water.png
| heat = 72 J/mol*K 
| latent_heat = 8000 J/mol 
| minimum_condensation = 6.3 kPa at 273.15 K 
| max_liquid = 6000 kPa at 643 K 
| freezes = 273.15 K
| liquid_volume = 18 L/kmol
| molar_mass = 108 g/mol
}}

[[File:Phase Diagram of Water.png|thumb|Phase Diagram of Water]]

==Description==
<blockquote><q>You can obtain water by smelting or crushing [[Ice (Water)]] using a [[Furnace]] or an [[Ice Crusher]]. Water is critical for [[plants]] to stay alive, and grow [[food]]. It is also an exceptional [[coolant]] with a very high [[specific heat capacity]]. Water will evaporate into Steam if its temperature is raised above its boiling point.</q> 
'''- [[Stationpedia]]'''</blockquote>

== Usage ==
Water needs to be consumed by the player in order to stay alive, see [[thirst]] rates. Water can be consumed from a [[Water Bottle]] or [[Drinking_ Fountain|water fountain]]. The water bottle can be filled using a [[Water Bottle Filler]]. Water is used when showering to recover [[Hygiene]]. It is also used to grow plants in a [[Hydroponic Tray]] or a [[Hydroponic Station]]. Water pollution occurs as a byproduct of using specific devices, resulting in [[Polluted Water]].

Water has a specific heat of 72 J/mol*K and a latent heat of 8000 J/mol making it great for [[Coolant|cooling]] applications.

== Sources ==
You can obtain water by smelting [[Ice (Water)]] using a [[Furnace]] or crushing [[Ice (Water)]] using [[Ice Crusher]], or by combusting [[Volatiles]] and [[Oxygen]] using the [[Kit (Atmospherics) H2 Combustor]]. Filtering is no longer required as the [[Furnace]] and [[Ice Crusher]] now contain separate outputs for liquids and gases. 
Water can also be obtained by filtering polluted water.

{| class="wikitable"
|-
! Source !! Amount
|-
| [[Ice (Water)]] || 20 mol
|}

== History ==
Water was previously treated as a [[Gas]]. It could be part of the [[atmosphere]], and could be stored in gas tanks and [[pipes]]. However, since with "Go with the flow" update, a new system for liquids has been introduced, including separate pipes, tanks, pumps, etc for liquids.
{{:Gases and Liquids/Menu}}

Carbon Dioxide

2026-03-26T04:40:44Z

Jebadiha: Added Phase Diagram

{{Infobox gas
| gas_name = Carbon Dioxide
| image = icon-carbondioxide.png
| heat = 28.2 J/mol*K 
| latent_heat = 600 J/mol 
| minimum_condensation = 517 kPa at 217.82 K 
| max_liquid = 6000 kPa at 265 K 
| freezes = 217.82 K
| liquid_volume = 40 L/kmol
| molar_mass = 44 g/mol
}}

[[File:Phase Diagram of Carbon Dioxide.png|thumb|Phase Diagram of Carbon Dioxide]]

= Description =
<blockquote><q>You breath it out, [[Plants|plants]] breath it in. They don't grow without it. You can use items placed in [[Filter|Gas 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]]. [[Water]] is better, but usually has more important uses.</q> '''- [[Stationpedia]]'''</blockquote>

Carbon Dioxide, also referred to as CO2, is a non-flammable gas found in some atmospheres naturally (such as [[Worlds#Mars|Mars]]). It can also be produced by burning [[Fuel]] or [[Coal]], smelting most [[ores]] (e.g. [[Ore_(Iron)|Iron]], [[Ore_(Copper)|Copper]], and [[Ore_(Silicon)|Silicon]]) and through human respiration.

= Details =
Carbon Dioxide will condense into Liquid Carbon Dioxide starting at {{Temperature|265}}. With such a low temperature requirement, most setups will store Carbon Dioxide as a gas and use Liquid Carbon Dioxide as a [[Coolant|coolant]].

Carbon Dioxide is required for most [[plants]] to grow. Plants will inhale the Carbon Dioxide to create [[Oxygen]] which can be harvested using [[Active Vent|vents]]. [[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]] 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:

{| class="wikitable"
|-
! Source !! Amount
|-
| [[Ore_(Coal)|Coal Ore]] || '''10 mol'''
|-
| [[Charcoal|Charcoal]] || 3 mol
|-
| [[Ore_(Copper)|Copper Ore]] || 1 mol
|-
| [[Ore_(Gold)|Gold Ore]] || 0.2 mol
|-
| [[Ore_(Iron)|Iron Ore]] || 0.5 mol
|-
| [[Ore_(Lead)|Lead Ore]] || 0.4 mol
|-
| [[Ore_(Nickel)|Nickel Ore]] || 1 mol
|-
| [[Ore_(Silicon)|Silicon Ore]] || 1 mol
|}

{{:Gases and Liquids/Menu}}

Methane

2026-03-26T04:39:49Z

Jebadiha: Added Phase Diagram

{{Infobox gas|gas_name=Methane|image=Icon-Methane.png|heat=20.4 J/mol*K |latent_heat=1000 J/mol |minimum_condensation=6.3 kPa at 81.6 K |max_liquid=6000 kPa at 195 K |freezes=81.6 K|liquid_volume=40 L/kmol|molar_mass=16 g/mol}}

[[File:Phase Diagram of Methane.png|thumb|Phase Diagram of Methane]]

== Description ==
<blockquote><q>Methane is a combustible fuel. It is refined from [[Ice (Volatiles)]]</q>

'''- [[Stationpedia]]'''</blockquote>'''Methane''' or CH'''4''' is a combustible gas in the presence of Oxygen and the breathing gas of the [[Zrilian]] species. The main source of Methane on most [[planets]] is in the form of [[Ice (Volatiles)]] that can be mined on the surface. Methane will autoignite at 300 Celsius or above in the presence of [[Oxygen]], and autoignite at 50 Celsius or above in the presence of [[Nitrous Oxide]].

=== Composition ===
Its combustion generates [[Pollutant|Pollutants]], which are also formed through the evaporation of [[Liquid Sodium Chloride]]. With the fact it's also toxic to humans and [[plants]], it is possible it's not actually methane but a close relative of it.

Possible compound: CH3Cl (Chloromethane)

== Usage ==
''See also: [[Fuel]]''

Different ratios of Methane and Oxygen will produce different temperatures and pressures during combustion. Combustion will create a large amount of Heat, [[pressure]], and [[Carbon Dioxide]]. This reaction is useful inside a [[Furnace]] for smelting [[ores]] and creating alloys, but can be catastrophic when inside a [[Canister]] or a [[room]].

These are the combustion reactions of methane:

{{Combustion|Fuel=Methane, 2|Oxidizer=Oxygen, 1|OutputA=Carbon Dioxide, 6|OutputB=Pollutant, 3|ShowAutoignition=true}}

{{Combustion|Fuel=Methane, 1|Oxidizer=Nitrous Oxide, 1|OutputA=Carbon Dioxide, 2|OutputB=Nitrogen, 2|ShowAutoignition=true}}

{{Combustion|Fuel=Methane, 3|Oxidizer=Ozone, 2|OutputA=Carbon Dioxide, 6|OutputB=Pollutant, 3|OutputC=Steam, 1|ShowAutoignition=true}}

Since both reactions results in same amount of heat, but the one with [[Nitrous]] Oxide results with less moles, it produces much more heat per amount of matter (2.25 times more heat [[energy]] per mole of reaction products). Also, [[Nitrogen]] has lower heat capacity than [[pollutant]], which results in even higher temperature.

The reaction rate by default (for example: in [[atmosphere]]) depends on temperature as clamp01(1 / (0.002 * (TC + 273.0)1.6 + 0.05) / 5 for oxygen as an [[oxidizer]], and clamp01(1 / (0.0025 * (TC + 273.0)1.01 + 0.05) / 5 for nitrous oxide or [[ozone]]. Thus, the maximum default reaction rate is 0.2 and is valid at temperatures below 211C when without nitrous oxide and 107C when enough nitrous oxide is present (>~5%). After that reaction rate decreases logarithmically. At temperatures above 460C, nitrous enriched fuel combusts faster (at approx. 2x rate) than oxygen only. At higher temperatures, the difference is even greater, thus making the reaction more efficient and violent. Some devices (like [[Combustor]] or [[Kit (Gas Fuel Generator)|Gas Fuel Generator]]) increases rate of reaction (to 0.9 i.e. 90% in both cases).

If a combusting gas mix contains Volatiles, NOS, and O2, they all will react proportionally at same rate, according to aforementioned reactions (i.e. at 90% reaction rate and ideally balanced mix, each component will decrease by 90% from it's original amount). When mix is unbalanced and have either excess of volatiles or oxidizers, then proportions decrease accordingly, i.e. with excess of volatiles, only the amount of volatiles corresponding to amount of oxidizers (2 per Oxygen, 1 per Nitrous Oxide) will decrease proportionally; with excess of oxidizers, similarly, only the amount of oxidizers corresponding to the amount of volatiles is decreased at reaction rate, i.e. oxygen reacts at half the rate of nitrous oxide.

Volatiles have a specific heat of 20.4 Joule / mol.

=== Notes ===

* The Specific heat of 20.4 Joule / mol is in-between the specific heat of [[Hydrogen]] and Methane.
* The actual Autoignition temperature of Chloromethane in Oxygen is 625 °C (1,157 °F; 898 K), the game grossly underestimated the iginition temperature by about 1.56 times.
* Concentrations of methane aboute 1% in atmosphere are lethal to plants, keep attention on that designing a greenhouse, because the [[Portable Composter]] [[Kit (Advanced Composter)|Advanced Composter]] will release Volatiles during the process.
* Enthalpy of Methane (CH4) combustion is precisely 286 kJ/mol (multiplied by 2 when using Nitrous Oxide or Ozone as oxidizers).
* As far as [[rocketry]] is concerned, Methane have a mass of 62.5 mol/kg.
* Given the above, Volatiles have a molar mass of 16, suggesting it really is methane (CH₄).

== Sources ==
Volatiles can be collected from the following sources:
{| class="wikitable"
!Source
!Amount
|-
|[[Biomass]]
|8 mol
|-
|[[Ice (Volatiles)]]
|20 mol
|-
|[[Ore (Cobalt)]]
|1 mol
|}
Can be also obtainable by [[trading]].

== References ==
<references />
{{:Gases and Liquids/Menu}}

Ozone

2026-03-26T04:39:00Z

Jebadiha: Added Phase Diagram

{{Infobox gas
| gas_name = Ozone
| image = Icon-Ozone.png
| heat = 38.6 J/mol*K 
| latent_heat = 1000 J/mol 
| minimum_condensation = 250 kPa at 81.4067268868 K
| max_liquid = 6000 kPa at 304.387897614 K
| freezes = 81.4067268868 K 
| coefficient_a = 0.006219763823043718 
| coefficient_b = 2.4097251251207226 
| autoignition_offset = -150
| enthalpy_multiplier = 2
| liquid_volume = 26 L/kmol
| molar_mass = 24 g/mol
| heat_capacity_ratio = 1.333333
| thermal_efficiency = 0.12
}}

[[File:Phase Diagram of Ozone.png|thumb|Phase Diagram of Ozone]]

= Description = <blockquote><q>Ozone is a highly energetic oxidiser. As with [[Nitrous Oxide]], when mixed with a volatile gas Ozone will create extra hot combustion.</q> 
'''- [[Stationpedia]]'''</blockquote>

Ozone, also referred to as O3, is an upcoming gas/liquid.

= Details =
Ozone will condense into '''Liquid Ozone''' starting at {{Temperature|304.38}}.

Combustions with Ozone are twice as energetic as [[Oxygen]] - a gain similar to [[Nitrous Oxide]]. Autoignition temperatures get reduced by 150°C.

== Notes ==
* When used as [[oxidizer]] in rocket [[fuel]], Ozone has a mass of 41.(6) mol/kg.

== Sources ==
You can collect Ozone from the following sources:

{| class="wikitable"
|-
! Source !! Amount
|-
| ? || ?
|-
| ? || ?
|-}

{{:Gases and Liquids/Menu}}

[[Category:Gas]][[Category:Liquid]]

Hydrogen

2026-03-26T04:38:14Z

Jebadiha: Added Phase Diagram

{{Infobox gas
| gas_name = Hydrogen
| image = Icon-Hydrogen.png
| heat = 20.4 J/mol*K 
| latent_heat = 200 J/mol 
| minimum_condensation = 6.3 kPa at 15.1767057463 K 
| max_liquid = 6000 kPa at 70.0551551908 K 
| freezes = 15.1767057463 K
| coefficient_a = 3.18041E-05
| coefficient_b = 4.4843872973
| thermal_efficiency = 0.18
| enthalpy = 306 kJ / mol
| liquid_volume = 28 L/kmol
| molar_mass = 2 g/mol
| heat_capacity_ratio = 1.4 
}}

[[File:Phase Diagram of Hydrogen.png|thumb|Phase Diagram of Hydrogen]]

== Description ==
<blockquote><q>Hydrogen is the most efficient fuel by weight for [[rocketry]]. When mixed with [[Oxygen]] it will cleanly combust into [[Water|Steam]].</q> 
'''- [[Stationpedia]]'''</blockquote>

'''Hydrogen''' or '''H2''' is a combustible gas. The main source of Hydrogen on most [[planets]] is in the form of [[Ice (Volatiles)]] that can be mined on the surface. Hydrogen will autoignite at 300°C or above in the presence of [[Oxygen]], autoignite at 150°C in the presence of [[Ozone]] and autoignite at 50°C in the presence of [[Nitrous Oxide]].

=== Combustion ===
* {{Combustion|Fuel=Hydrogen, 2|Oxidizer=Oxygen, 1|OutputA=Steam, 3|ShowAutoignition=true}}
* {{Combustion|Fuel=Hydrogen, 1|Oxidizer=Nitrous Oxide, 1|OutputA=Steam, 1|OutputB=Nitrogen, 1|ShowAutoignition=true}}
* {{Combustion|Fuel=Hydrogen, 3|Oxidizer=Ozone, 1|OutputA=Steam, 4|ShowAutoignition=true}}
== Usage ==
''See also: [[Fuel]]''

While Hydrogen is a superior fuel for rocketry, there is currently no way to refine it from [[Methane]], limiting its available supply. As such, it is recommended to combine it with [[Nitrous Oxide]] or [[Ozone]] in rocketry applications to maximize its effectiveness.

A suggested alternative use is as a working gas for a [[Stirling Engine]], where it can achieve a conversion efficiency of 18%, surpassing the efficiency of [[Methane]] and tying it with [[Helium]].

Hydrogen also has the lowest freezing point of all gases capable of phase change, making it the only choice for extreme cryocooling applications. However, its limited latent heat capacity hinders its performance in that task.

===Notes===
* The Specific heat of 20.4 Joule / mol is in-between the specific heat of Hydrogen and Methane in real-life.
* The actual Autoignition temperature of Hydrogen in Oxygen is approximately 570 °C at 1 atm, decreasing to 414°C at 7.4 MPa.
* Unlike [[Methane]], Hydrogen is not toxic to most [[plants]] in-game.
* As far as rocketry is concerned, Hydrogen has a mass of 500 mol/kg (2 g/mol).

==Sources==
Hydrogen can be obtained by processing [[Water]] in an [[Electrolyzer]] or acquired from [[traders]].
 Additionally, Hydrogen can be collected from the following sources:

{| class="wikitable"
|-
! Source !! Amount
|-
| [[Ice (Volatiles)]] || 2 mol
|}

== References ==
<References />
{{:Gases and Liquids/Menu}}
[[Category:Gas]][[Category:Liquid]]

Pollutant

2026-03-26T04:36:40Z

Jebadiha: Added Phase Diagram

{{Infobox gas
| gas_name = Pollutant
| image = icon-pollutant.png
| heat = 24.8 J/mol*K 
| latent_heat = 2000 J/mol 
| minimum_condensation = 1800 kPa at 173.32 K 
| max_liquid = 6000 kPa at 425 K 
| freezes = 173.32 K
| liquid_volume = 40 L/kmol
| molar_mass = 28 g/mol
}}

[[File:Phase Diagram of Pollutant.png|thumb|Phase Diagram of Pollutant]]

==Description==
<blockquote><q>Also known as 'X', Pollutant is created when smelting certain metals. A concentration of 0.1 mol or greater will cause your suit to warn about poison in the [[atmosphere]]. Pollutant has a high specific heat, making it an excellent coolant. Unfortunately it is extremely bad for organic beings, and will severely damage the lungs of most Carbon based organisms.</q> 
'''- [[Stationpedia]]'''</blockquote>

'''Pollutant''', also known as '''X''', is produced when smelting certain metals. A concentration of 0.1 Mol or greater will cause your suit to warn about pollutants/poison in the [[air]], and it's not recommended to breathe air containing Pollutant.

Pollutant has an isochoric molar heat capacity of 24.8 J/mol⋅K.

Pollutant has been noted as pure Chlorine, but can also be considered other hazardous gasses such as [[Hydrogen]] Sulfide, etc. This is why [[Volatiles]] are denoted as possibly being Chloromethane. 

==Usage==
Pollutant is great for using as a [[Coolant]].

==Sources==
You can collect Pollutant from the following sources:

{| class="wikitable"
|-
! Source !! Amount
|-
| [[Biomass]] || 4 mol
|-
| [[Ore_(Coal)|Coal Ore]] || 3 mol
|-
| [[Charcoal|Charcoal]] || 3 mol
|-
| [[Ore_(Copper)|Copper Ore]] || 1 mol
|-
| [[Ore_(Gold)|Gold Ore]] || 2 mol
|-
| [[Ore_(Iron)|Iron Ore]] || 2 mol
|-
| [[Ore_(Lead)|Lead Ore]] || 2 mol
|-
| [[Ore_(Nickel)|Nickel Ore]] || 1 mol
|-
| [[Ore_(Silicon)|Silicon Ore]] || 1 mol
|-
| [[Ore_(Silver)|Silver Ore]] || 1 mol
|-
| [[Ore_(Uranium)|Uranium Ore]] || '''35 mol'''
|}
{{:Gases and Liquids/Menu}}
[[Category:Gas]][[Category:Liquid]]

Nitrogen

2026-03-26T04:32:21Z

Jebadiha: Added Phase Diagram

{{Infobox gas
| gas_name = Nitrogen
| image = icon-nitrogen.png
| heat = 20.6 J/mol*K 
| latent_heat = 500 J/mol 
| minimum_condensation = 6.3 kPa at 40.01 K 
| max_liquid = 6000 kPa at 190 K 
| freezes = 40.01 K
| liquid_volume = 34.8 L/kmol
| molar_mass = 64 g/mol 
}}

[[File:Phase Diagram of Nitrogen.png|thumb|Phase Diagram of Nitrogen]]

= Description =
{{Stationpedia|Nitrogen can be mixed with [[Oxygen]] to stabilize its flammability and avoid Oxygen toxicity, and is a resource in its own right, useful for creating, a breathable [[atmosphere]] (at roughly 3:1 Nitrogen and Oxygen). The most efficient source of Nitrogen is from [[Ice (Nitrice)]] deposites found around the Solar System. You can Condense Nitrogen into Liquid Nitrogen by lowering its temperature below its boiling point.}}

Nitrogen, also referred to as N2, is an inert [[Gas|gas]] most often used in the creation of [[Air|air]].

= Details =
Nitrogen will condense into Liquid Nitrogen starting at {{Temperature|190}}. The boiling point of Nitrogen is {{Temperature|75}} at 100 kPa.

Due to its high molar density, low heat capacity, and generally inert nature, Nitrogen is an excellent [[pressure]] agent for condensing other gases into liquids and keeping [[Water|water]] from evaporating passively.

[[Soybean|Soybeans]] require Nitrogen to grow, but they will still exhale [[Oxygen]].

Nitrogen is used in the creation of [[Nitrous Oxide]] when combined with [[Oxygen]] in a [[Nitrolyzer]].

==Sources==
You can collect Nitrogen from the following sources:

{| class="wikitable"
|-
! Source !! Amount
|-
| [[Ice_(Nitrice)|Ice (Nitrice)]] || 22.5 mol
|-
| [[Ice_(Water)|Ice (Water)]] || 5 mol
|-
| [[Ice_(Oxite)|Ice (Oxite)]] || 2.5 mol
|-
| [[Ore_(Lead)|Lead Ore]] || 1 mol
|-
| [[Ore_(Silicon)|Silicon Ore]] || 1 mol
|-
| [[Ore_(Nickel)|Nickel Ore]] || 0.5 mol
|-
| [[Ore_(Gold)|Gold Ore]] || 0.5 mol
|-
| [[Ore_(Copper)|Copper Ore]] || 0.5 mol
|-
| [[Ore_(Silver)|Silver Ore]] || 0.4 mol
|}
producing [[Fertilizer]] in the [[Kit (Advanced Composter)|Advanced Composter]]
{{:Gases and Liquids/Menu}}
[[Category:Gas]][[Category:Liquid]]

Oxygen

2026-03-26T04:31:26Z

Jebadiha: Added Phase Diagram

{{Infobox gas
| gas_name = Oxygen
| image = icon-oxygen.png
| heat = 21.1 J/mol*K 
| latent_heat = 800 J/mol 
| minimum_condensation = 6.3 kPa at 56.416 K 
| max_liquid = 6000 kPa at 162.2 K 
| freezes = 56.416 K
| liquid_volume = 30 L/kmol
| molar_mass = 16 g/mol
}}

[[File:Phase Diagram of Oxygen.png|thumb|Phase Diagram of Oxygen]]

= Description = <blockquote><q>Oxygen provides [[energy]] when released in combustion, and also bonds with [[hydrogen]] to create [[Water]]. It is created by [[plants]], as well as from processing [[Ice (Oxite)]]. It is highly flammable at low temperatures.</q> 
'''- [[Stationpedia]]'''</blockquote>

Oxygen, also referred to as O2, is the basic gas necessary for human survival. It is is released when smelting certain ore (such as [[Ore_(Gold)|gold]]) or by melting [[Ice_(Oxite)|Oxite]]. It is also produced by plants in [[Hydroponic_Tray|hydroponic trays]] or the [[Hydroponic_Station|hydroponics station]] when they photosynthesize.

= Details =
Oxygen will condense into '''Liquid Oxygen''' starting at {{Temperature|162}}. The boiling point of Oxygen is {{Temperature|90}} at 100 kPa.

Pure Oxygen auto-ignites at {{Temperature|573.15}} when in [[atmosphere]] at any [[pressure]] where [[Volatiles|volatile gases]] are present. This may be caused by activating a gas-powered [[Welder|welder]], engaging any type of crafting stations working with metal (such as an [[Autolathe|autolathe]]), or using any firearm, either of which will create a local temperature spike and the follow-up chain reaction.

Oxygen is mainly used in sustaining human life, either in the ambient atmosphere when your [[helmet]] is open, or in your suit's oxygen [[tank]]. Oxygen's other roles are in the creation of [[Fuel#Gas_Fuel|fuel]], as well as [[Nitrous Oxide]] through the use of a [[Nitrolyzer]].

== Notes ==
* When used as [[oxidizer]] in rocket [[fuel]], oxygen has a mass of 62.4 mol/kg.

== Sources ==
You can collect Oxygen from the following sources:

{| class="wikitable"
|-
! Source !! Amount
|-
| [[Ice_(Oxite)|Ice (Oxite)]] || 22.5 mol
|-
| [[Ore_(Gold)|Gold Ore]] || 0.2 mol
|-}

{{:Gases and Liquids/Menu}}

[[Category:Gas]][[Category:Liquid]]

File:Phase Diagram of Water.png

2026-03-26T04:21:53Z