IUPAC Name: 1-Methyl-2-Nitrosobenzene
Product Categories: Nitrogen Compounds ; Nitroso Compounds ; Organic Building Blocks 
Molecular Formula: C₇H₇NO 
Molecular Weight: 121.14 g/mol
EINECS: 210-261-4 
Density: 1.03 g/cm³
Melting Point: 72-75 °C(lit.)
Flash Point: 74.7 °C
Boiling Point: 199.9 °C at 760 mmHg
Vapour Pressure: 0.472 mmHg at 25°C 
Index of Refraction: 1.524
Molar Refractivity: 35.97 cm³
Molar Volume: 117.5 cm³
Surface Tension: 35.8 dyne/cm
Enthalpy of Vaporization: 41.83 kJ/mol
Refractive Index:  0-6°C 
Storage Temp.: 0-6 °C
Stability: Stable. Incompatible with oxidizing agents. 
The molecular structure of 2-Nitrosotoluene (CAS NO.611-23-4):

Questionable carcinogen with experimental carcinogenic data. Mutation data reported. Many nitroso compounds are carcinogens. When heated to decomposition it emits toxic fumes of NO_x. See also NITROSO COMPOUNDS.
Hazard Codes: Xn
Risk Statements: 20/21/22-36/37/38
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed. 
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 26-36
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36:Wear suitable protective clothing.
WGK Germany: 3
RTECS: XT3400000

 2-Nitrosotoluene (CAS NO.611-23-4) is also named as 1-Methyl-2-nitrosobenzene ; 2-Methyl-1-nitrosobenzene ; 2-Methylnitrosobenzene ; 4-05-00-00844 (Beilstein Handbook Reference) ; BRN 1927295 ; CCRIS 480 ; NSC 66507 ; o-Methylnitrosobenzene ; o-Nitrosotoluene . 2-Nitrosotoluene (CAS NO.611-23-4) is a colorless solid.