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N₂O – General Information, N₂O Gas Sensors & Relevant Applications
Nitrous oxide (N2O), commonly known by the trivial name laughing gas, is a colorless gas from the group of nitrogen oxides. Discover all the info about this gas and about the N2O sensors from Wi.Tec-Sensorik ...
General information on N₂O / Nitrous oxide
Nitrous oxide (N₂O), commonly known by the trivial name laughing gas, is a colorless gas from the group of nitrogen oxides. In the literature, nitrous oxide is also referred to as nitrogen oxydul. Laughing gas is best known as an inhalation anesthetic. N2O is also produced in small quantities during the combustion of fossil fuels.
Properties for N₂O
Please note that these properties may change depending on pressure and temperature.
- Molecular weight: The molecular weight of N₂O is about 44.02 g/mol.
- Boiling point: The boiling point of N₂O is -88.48 degrees Celsius (-127.26 degrees Fahrenheit) under normal pressure.
- Melting point: The melting point is -91.01 degrees Celsius (-131.82 degrees Fahrenheit) at a pressure of 1 atmosphere.
- Density: The density of N₂O varies with pressure and temperature. At room temperature and normal pressure, the density is approximately 1.977 kg/m³.
- Physical state: N₂O is a gas at room temperature and normal pressure.
- Solubility in water: N₂O is about 0.15 g/l soluble in water at 0 degrees Celsius and about 0.09 g/l soluble at 25 degrees Celsius.
- Odor and taste: N₂O is odorless and tasteless.
- Thermal conductivity: The thermal conductivity of N₂O is about 0.0152 W/(m-K) at 25 degrees Celsius.
- Critical point: The critical point of N₂O is at a temperature of 36.5 degrees Celsius and a pressure of 7.28 MPa.
Application examples for N₂O
- Medicine: Nitrous oxide is used as an analgesic and anesthetic in dentistry and minor surgery.
- Food industry: Nitrous oxide is used as a propellant in spray cream and other foods to improve volume and texture.
- Industrial applications: N₂O is used in the chemical industry as an oxidizer and in the production of nitrogen oxides.
- Electronics industry: in semiconductor and electronics industry, N₂O can be used to oxidize silicon substrates.
- Laboratories: N₂O is used in laboratories as a propellant for aerosols and as an inert gas for various applications.
- Wastewater treatment plants: Monitoring of N₂O emission in open clarifiers and control of the process chain.
Nitrous oxide is considered a greenhouse gas: It contributes to global warming and climate change. Its greenhouse effect is 265 times higher than carbon dioxide (CO₂) and 9.5 times higher than methane (CH₄). It is mainly released by human activities, such as agriculture (through the use of fertilizers and animal husbandry) and the burning of fossil fuels.
Measuring N₂O (nitrous oxide) at wastewater treatment plants can be important to monitor and control emissions of this greenhouse gas.
Wastewater treatment plants can be a significant source of N₂O emissions because the breakdown of nitrogen compounds during the treatment process can result in the release of nitrous oxide. Regular measurement of N₂O emissions at wastewater treatment plants allows operators to assess the impact of their plants on climate change and take appropriate action to reduce emissions. This may include, for example, optimizing the treatment process, reducing nitrogen inputs, or implementing N₂O capture technologies.
In addition, N₂O measurements in wastewater treatment plants can also help to verify compliance with environmental regulations and standards and to improve the efficiency of wastewater treatment plants.
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Gas sensors from Wi.Tec-Sensorik for the precise measurement of N₂O
Overview Products and Measurement Ranges
| Measuring range (*) | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 100 Vol.% | 50 Vol.% | 30 Vol.% | 20 Vol.% | 10 Vol.% | 5 Vol.% | 1 Vol.% | 5,000 ppm | 2,000 ppm | 1,000 ppm | 500 ppm | 300 ppm | 100 ppm | 50 ppm | 10 ppm | 1 ppm | |
| Kombi.sens | ||||||||||||||||
| INFRA.sens AK5 | ||||||||||||||||
| INFRA.sens AK20 | ||||||||||||||||
| INFRA.sens AK100 | ||||||||||||||||
| INFRA.sens AK250 | ||||||||||||||||
| INFRA.sens AK250 TBH N2O CH4 CO2 | ||||||||||||||||
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Some relevant Applications to N₂O
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