Nitrogen Dioxide
NO₂·46.006 g/mol·Inorganic·CID 3032552
PollutantRadical
A brown, toxic gas and key component of urban smog. One of few stable molecules with an unpaired electron (free radical). Dimerizes to N₂O₄ at lower temperatures.
Also known as: DTXSID7020974, Dioxide, Nitrogen, Peroxide, Nitrogen, Nitrogen oxide (NO2), Azoto (+14 more)
Molecular Structure
Molecular Propertiesmass · H-bonds · stereo
Molecular Weight
46.006g/mol
Exact Mass
45.992903Da
Monoisotopic Mass
45.992903Da
XLogP
-0.3
Polar Surface Area
30.4Ų
Complexity
7
Formal Charge
0
H-Bond Donors
0
H-Bond Acceptors
2
Rotatable Bonds
0
Heavy Atoms
3
Stereo Centers
0
Bond Stereo
0
Drug-Likeness (Lipinski's Rule of Five)
✓ 46.0 g/mol
MW ≤ 500
✓ -0.3
LogP ≤ 5
✓ 0
H-bond donors ≤ 5
✓ 2
H-bond acceptors ≤ 10
Passes all rules — good oral bioavailability predicted
GHS Hazard Classification
Danger
Hazards
H270May cause or intensify fire; oxidizerH314Causes severe skin burns and eye damageH330Fatal if inhaledH280Contains gas under pressure; may explode if heatedH318Causes serious eye damageH319Causes serious eye irritationH336May cause drowsiness or dizzinessH361Suspected of damaging fertility or the unborn childH370Causes damage to organsH372Causes damage to organs through prolonged or repeated exposure
Source: PubChem GHS Classification. Always consult the SDS for handling.