Nitrogen Dioxide

NO₂

IUPAC: Nitrogen dioxide

CAS: 10102-44-0

Overview

Nitrogen dioxide is a reddish-brown toxic gas with a sharp, biting odor. It is a major air pollutant from vehicle exhaust and power plants.

Composition

Element Symbol Atoms Atomic Mass
Nitrogen N 1 14.0070
Oxygen O 2 15.9990

Elemental Composition

N
Nitrogen ×1
30.4%
O
Oxygen ×2
69.5%

Uses

  • • Nitric acid production
  • • Rocket propellant oxidizer

Fun Facts

  • ✦ NO₂ gives smog its characteristic brown haze

Safety

  • ⚠ Toxic
  • ⚠ Respiratory irritant
  • ⚠ Contributes to smog

Structure

SMILES

N(=O)[O]

Properties

Type
oxide
State
gas
Molar Mass
46.01 g/mol
Density
0.0019 g/cm³
Melting Point
-11.2 °C
Boiling Point
21.2 °C
Solubility
Reacts

Molecular Descriptors

Exact Mass
45.9929
XLogP
-0.3
TPSA
30.4 Ų
H-Bond Donors
0
H-Bond Acceptors
2
Rotatable Bonds
0
Heavy Atoms
3
Complexity
7.0

Related Compounds

Aluminum Oxide

Al₂O₃

Antimony Trioxide

Sb₂O₃

Barium Oxide

BaO

Beryllium Oxide

BeO

Bismuth(III) Oxide

Bi₂O₃

Boron Trioxide

B₂O₃

Cadmium Oxide

CdO

Calcium Oxide

CaO

Carbon Dioxide

CO₂

Carbon Monoxide

CO

Frequently Asked Questions

What is Nitrogen Dioxide?
Nitrogen Dioxide (NO₂) is a oxide compound with the IUPAC name Nitrogen dioxide.
What is the molecular weight of Nitrogen Dioxide?
Nitrogen Dioxide has a molar mass of 46.01 g/mol.
What state is Nitrogen Dioxide at room temperature?
Nitrogen Dioxide is a gas at room temperature.
Is Nitrogen Dioxide organic or inorganic?
Nitrogen Dioxide is classified as an inorganic compound.
What elements make up Nitrogen Dioxide?
Nitrogen Dioxide (NO₂) is composed of Nitrogen (N), Oxygen (O).