Stationeers Community Wiki - User contributions [en]

Hydrochloric Acid

2026-04-26T01:50:06Z

Crazy lemmon: Saw it in my game

{{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]]

{{Stationpedia|A highly toxic gas.}}

= 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]], or rocket mining.{{:Gases and Liquids/Menu}}

Liquid Sodium Chloride

2026-04-26T01:48:51Z

Crazy lemmon: I saw it in my gameplay

{{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]]

{{Stationpedia|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]].}}

== 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. Becaue of its lower molar liquid density, Liquid sodium chloride has 0.8125x the heat capacity of [[Water]] within [[pipe]] networks. However, its greater liquid temperature range gives it the highest ingame heat energy storage per volume, with an energy storage density of ~9 MJ/L at 2500°C.

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]] or rocket mining.
{| class="wikitable"
|-
! Source !! Amount
|-
|[[Salt]]|| 50 mol
|}

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

Hydrogen

2026-04-26T01:47:58Z

Crazy lemmon: Saw it in my game

{{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]]

{{Stationpedia|Hydrogen is the most efficient fuel by weight for [[rocketry]]. When mixed with [[Oxygen]] it will cleanly combust into [[Water|Steam]].}}

== Description ==
'''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]]
and rocketry. 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]]

Silanol

2026-04-26T01:45:59Z

Crazy lemmon: Ozone ice hydrazine and silanol are all available through Rocketry based on my observations in gameplay.

{{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]]

{{Stationpedia|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.}}

== 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 and rocket mining.

{| 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}}

Ozone

2026-04-26T01:45:02Z

Crazy lemmon: Ozone ice hydrazine and silanol are all available through Rocketry based on my observations in gameplay.

{{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]]

{{Stationpedia|Ozone is a highly energetic oxidiser. As with [[Nitrous Oxide]], when mixed with a volatile gas Ozone will create extra hot combustion.}}

= Description =
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 ==
Ozone can be obtained through traders or rocket mining.

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

{{:Gases and Liquids/Menu}}

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

Hydrazine

2026-04-26T01:42:20Z

Crazy lemmon: /* Sources */ this is my first edit! Source is my Mimas game where I have mined hydrazine.

{{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]]

{{Stationpedia|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.}}

== Description ==
'''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]] and Rocketry.

For rocket mining the location can be a Hydrazine asteroid. Despite the name asteroid implying a normal mining head, it is actually an ice and will require an ice mining drill head.
{| class="wikitable"
|-
! Source !! Amount
|-
|? || ?
|}

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