Liquid ammonia boiling point
Liquid ammonia boiling point is the temperature at which ammonia boils and turns into gas near atmospheric pressure.
How big is it?
-33.15 °C · representative boiling temperature
Also -27.67 °F
Representative boiling temperature · approximate
A little perspective
Liquid ammonia boiling point vs Water triple point: temperature comparison
The boiling point of liquid ammonia is 33.16 K lower than the water triple point.
Liquid ammonia boiling point is the temperature at which ammonia boils and turns into gas near atmospheric pressure.
The water triple point is the unique temperature and pressure at which water can exist simultaneously as solid, liquid, and vapour in equilibrium.
Measurements, assumptions & sources +
Liquid ammonia boiling point
Representative boiling temperature: -33.15 °C; approximate.
A deliberately rounded 240 K boiling-temperature anchor for ammonia near atmospheric pressure. Pressure and mixture purity materially change the boiling point.
Defined examples — our methodology
The marked representative boiling temperature is calibrated. Unmeasured illustration details are representative.
Water triple point
Triple-point temperature: 0.01 °C; specified.
The triple point of water is 273.16 K for a specified isotopic composition at its equilibrium pressure. It is distinct from ordinary freezing water at atmospheric pressure.
IAPWS — Fundamental physical constants of water
The marked triple-point temperature is calibrated. Unmeasured illustration details are representative.
Use the visual comparison to explore its scale, then check the measurements and sources.
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Why this measurement?
Why we use -33.15 °C
We compare the boiling point of liquid ammonia. This is an estimate; check the notes for its rounding and uncertainty.
A deliberately rounded 240 K boiling-temperature anchor for ammonia near atmospheric pressure. Pressure and mixture purity materially change the boiling point.
The picture identifies the subject; the diagram compares the recorded values. How calibrated comparisons work →
Recorded properties
Dimensions and measurements
| Property | Selected value | Recorded range | Basis |
|---|---|---|---|
| -33.15 °C | Not recorded | approximate |
Around this scale
Explore nearby values.
Compare examples with lower, similar and higher values. Each card names the measurement being compared.
Nearest lower valueTemperatureDry ice sublimation point-78.5 °CSublimation temperature at one atmosphereThe dry ice sublimation point is the temperature at which solid carbon dioxide turns directly into gas at standard atmospheric pressure.Around the same scaleTemperatureFreezing water0 °CTemperatureFreezing water is liquid water at the temperature where it begins to turn into ice under normal pressure.Nearest higher valueTemperatureA freezing winter day-10 °CTemperatureA freezing winter day is weather cold enough for outdoor water to turn to ice.Sources and method
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TemperatureWater triple point0.01 °CThe water triple point is the unique temperature and pressure at which water can exist simultaneously as solid, liquid, and vapour in equilibrium.TemperatureDry ice sublimation point-78.5 °CThe dry ice sublimation point is the temperature at which solid carbon dioxide turns directly into gas at standard atmospheric pressure.TemperatureA freezing winter day-10 °CA freezing winter day is weather cold enough for outdoor water to turn to ice.TemperatureGallium melting plateau at standard pressure29.76 °CThis is the temperature at which pure gallium changes from solid to liquid under normal atmospheric pressure.TemperatureFreezing water0 °CFreezing water is liquid water at the temperature where it begins to turn into ice under normal pressure.TemperatureRoom temperature20 °CRoom temperature describes indoor air conditions generally considered comfortable for people and suitable for ordinary activities.TemperatureA warm summer day30 °CA warm summer day is weather with outdoor air noticeably hotter than average, typical of summer in temperate regions.TemperatureHuman body temperature37 °CHuman body temperature is the internal temperature maintained by a healthy person under normal conditions.