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Nitric Oxide Properties

Nitric Oxide

Nitric Oxide-Molecule Struture
Molecule Structure Image

Description

 

Nitric Oxide is a free radical. It is an important intermediate in the chemical industry. Nitric oxide is a by-product of combustion of substances in the air, as in automobile engines, fossil fuel power plants, and is produced naturally during the electrical discharges of lightning in thunderstorms. It is a powerful vasodilator with a short half-life of a few seconds in the blood. Nitric oxide in the air may convert to nitric acid, which has been implicated in acid rain. Nitric oxide can be used for detecting surface radicals on polymers. Nitric oxide is one of the few gaseous signaling molecules known and is additionally exceptional due to the fact that it is a radical gas. It is a key vertebrate biological messenger, playing a role in a variety of biological processes. Nitric oxide is a known bioproduct in almost all types of organisms, ranging from bacteria to plants, fungi, and animal cells. Nitric oxide, known as the 'endothelium-derived relaxing factor', or 'EDRF', is biosynthesized endogenously from L-arginine, oxygen, and NADPH by various nitric oxide synthase (NOS) enzymes. It contributes to vessel homeostasis by inhibiting vascular smooth muscle contraction and growth, platelet aggregation, and leukocyte adhesion to the endothelium. Nitric oxide is also generated by phagocytes as part of the human immune response.

Chemical Properties

Appearance colourless gas
Boiling Point -150.8 °C
CAS Number 10102-43-9
Density 1.269 g/cm3 (liquid)
EINECS Number 233-271-0
InChI 1S/NO/c1-2
InChIKey MWUXSHHQAYIFBG-UHFFFAOYSA-N
Melting Point -163.6 °C,
Molar Mass 30.006 g/mol
Molecular Formula NO
NFPA 704 H-3,F-0,R-0,C-OX
Refractive 1.0002697 n/D
Synonyms Nitrogen Monoxide;Nitrogen(II) Oxide;Nitrogen Oxide