Nitrosobenzene

Nitrosobenzene
Names
	Preferred IUPAC name Nitrosobenzene
Identifiers
CAS Number	586-96-9 ;
3D model (JSmol)	monomer: Interactive image; dimer: Interactive image;
ChEBI	CHEBI:27986 ;
ChEMBL	ChEMBL98797 ;
ChemSpider	10989 ;
ECHA InfoCard	100.008.721
KEGG	C06876 ;
PubChem CID	11473;
RTECS number	DA6497525;
UNII	ZI9W9E8G2Z ;
CompTox Dashboard (EPA)	DTXSID7060417 ;
	InChI InChI=1S/C6H5NO/c8-7-6-4-2-1-3-5-6/h1-5H Key: NLRKCXQQSUWLCH-UHFFFAOYSA-N ; InChI=1/C6H5NO/c8-7-6-4-2-1-3-5-6/h1-5H Key: NLRKCXQQSUWLCH-UHFFFAOYAR;
	SMILES monomer: O=Nc1ccccc1; dimer: c1ccccc1[N+](=O)N([O-])c1ccccc1;
Properties
Chemical formula	C6H5NO
Molar mass	107.112 g·mol−1
Appearance	Dark green solid (freshly sublimed monomer); pale yellow solid (dimeric form); bright green solution (light sensitive)
Melting point	65 to 69 °C (149 to 156 °F; 338 to 342 K)
Boiling point	59 °C (138 °F; 332 K) (at 18 mmHg)
Solubility in water	Low
Solubility in other solvents	Sol. in organic solvents
Magnetic susceptibility (χ)	−59.1·10−6 cm3/mol
Structure
Molecular shape	N is sp2
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	toxic
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H301, H312, H332
Precautionary statements	P261, P264, P270, P271, P280, P301+P310, P302+P352, P304+P312, P304+P340, P312, P321, P322, P330, P363, P405, P501
Related compounds
Related compounds	Nitrobenzene; Aniline
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Nitrosobenzene is the organic compound with the formula C₆H₅NO. It is one of the prototypical organic nitroso compounds. Characteristic of its functional group, it is a dark green species that exists in equilibrium with its pale yellow dimer. Both monomer and dimer are diamagnetic.