Nitrous oxide

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General

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Name

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Dinitrogen oxide

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Chemical formula

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N2O

Related Topics:
N - O

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Appearance

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Colorless gas

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Physical

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Formula weight

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44.0 u

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Melting point

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182 K (-91 °C)

Related Topics:
K - °C

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Boiling point

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185 K (-88 °C)

Related Topics:
K - °C

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Critical temperature

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309.6 K (36.4 °C)

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Critical pressure

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7.245 MPa

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Density

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1.2 g/cm3 (liquid)

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Solubility

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0.112 g in 100g water

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Thermochemistry

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ΔfH0gas

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82.05 kJ/mol

Related Topics:
KJ - Mol

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ΔfH0liquid

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? kJ/mol

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ΔfH0solid

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? kJ/mol

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S0gas, 100 kPa

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219.96 J/(mol·K)

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S0liquid, 100 kPa

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? J/(mol·K)

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S0solid

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? J/(mol·K)

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Safety

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Inhalation

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See main text. May cause asphyxiation without warning.

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Skin

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Hazardous when cryogenic or compressed.

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Eyes

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Hazardous when cryogenic or compressed.

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More info

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Hazardous Chemical Database

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SI units were used where possible. Unless otherwise stated, standard conditions were used.

Related Topics:
SI - Standard

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Disclaimer and references

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Nitrous oxide, also known as dinitrogen oxide or dinitrogen monoxide, is a chemical compound with chemical formula N2O. Under room conditions it is a colourless non-flammable gas, with a pleasant, slightly sweet odor. It is commonly known as laughing gas due to the exhilarating effects of inhaling it, and because it can cause spontaneous laughter in some users. It is used in surgery and dentistry for its anaesthetic and analgesic effects. Nitrous oxide is present in the atmosphere where it acts as a powerful greenhouse gas.

Related Topics:
Chemical compound - Chemical formula - N - O - Gas - Dentistry - Anaesthetic - Analgesic - Atmosphere - Greenhouse gas

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