Nitric Oxide

NO

IUPAC: Nitric oxide

CAS: 10102-43-9

Overview

Nitric oxide is a signaling molecule in the cardiovascular system. Its discovery as a biological messenger won the 1998 Nobel Prize in Physiology.

Composition

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

Elemental Composition

N
Nitrogen ×1
46.7%
O
Oxygen ×1
53.3%

Uses

  • • Vasodilator (Viagra mechanism)
  • • Air pollution marker
  • • Food preservation

Fun Facts

  • ✦ Viagra works by enhancing the NO signaling pathway — the discovery of NO as a biological messenger won the 1998 Nobel Prize

Safety

  • ⚠ Toxic
  • ⚠ Oxidizes to toxic NO₂ in air

Structure

SMILES

[N]=O

Properties

Type
gas
State
gas
Molar Mass
30.01 g/mol
Density
0.0013 g/cm³
Melting Point
-163.6 °C
Boiling Point
-151.8 °C
Solubility
0.032 g/L at 20°C

Molecular Descriptors

Exact Mass
29.9980
XLogP
0.2
TPSA
18.1 Ų
H-Bond Donors
0
H-Bond Acceptors
1
Rotatable Bonds
0
Heavy Atoms
2
Complexity
2.0

Related Compounds

Boron Trifluoride

BF₃

Nitrous Oxide

N₂O

Ozone

O₃

Phosphine

PH₃

Silane

SiH₄

Frequently Asked Questions

What is Nitric Oxide?
Nitric Oxide (NO) is a gas compound with the IUPAC name Nitric oxide.
What is the molecular weight of Nitric Oxide?
Nitric Oxide has a molar mass of 30.01 g/mol.
What state is Nitric Oxide at room temperature?
Nitric Oxide is a gas at room temperature.
Is Nitric Oxide organic or inorganic?
Nitric Oxide is classified as an inorganic compound.
What elements make up Nitric Oxide?
Nitric Oxide (NO) is composed of Nitrogen (N), Oxygen (O).