Product Name: Phenylbenzoquinone 
CAS Registry Number: 363-03-1 
Synonyms: 2-Phenyl-1,4-benzoquinone ; 2-Phenyl-2,5-cyclohexadiene-1,4-dione ; 2-Phenyl-p-benzoquinone ; 2-Phenylbenzoquinone ; CCRIS 4280 ; EINECS 206-654-5 ; NSC 2806 ; Phenyl-1,4-benzoquinone ; Phenyl-p-benzoquinone ; Phenylbenzoquinone ; Phenylquinone ; o-Phenylbenzoquinone ; p-Benzoquinone, 2-phenyl- ; p-Benzoquinone, phenyl- ; 2,5-Cyclohexadiene-1,4-dione, 2-phenyl- ; 2-Phenyl-1,4-benzoquinone ; Phenyl-p-benzoquinone ; p-Benzoquinone, 2-phenyl- (8CI) ; p-Benzoquinone, phenyl- 
IUPAC Name: 2-phenylcyclohexa-2,5-diene-1,4-dione 
Molecular Weight: 184.19072 [g/mol]
Molecular Formula: C₁₂H₈O₂
XLogP3-AA: 1.7 
H-Bond Acceptor: 2 
Surface Tension: 51.1 dyne/cm
Density: 1.242 g/cm³
Flash Point: 125.2 °C 
Melting Point: 111-115 °C
Enthalpy of Vaporization: 57.68 kJ/mol
Boiling Point: 333.9 °C at 760 mmHg
Vapour Pressure: 0.000133 mmHg at 25°C
Following is the molecular structure of Phenylbenzoquinone (CAS NO.363-03-1) is:

Reported in EPA TSCA Inventory.

Safty information about Phenylbenzoquinone (CAS NO.363-03-1) is:
Poison by intraperitoneal route. Experimental reproductive effects. Mutation data reported. When heated to decomposition it emits acrid smoke and irritating fumes. 
Hazard Codes:
Xi,Xn
Risk Statements:
R36/37/38:Irritating to eyes, respiratory system and skin. 
R42/43:May cause sensitization by inhalation and skin contact. 
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed. 
Safety Statements:
S37/39:Wear suitable gloves and eye/face protection. 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36:Wear suitable protective clothing.
RTECS: DK6650000

 Phenylbenzoquinone (CAS NO.363-03-1) is a yellow-brown chunks and powder.
First Aid Measures:
Eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.
Skin: Get medical aid. Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Remove contaminated clothing and shoes.
Ingestion: If victim is conscious and alert, give 2-4 cupfuls of milk or water. Get medical aid immediately.
Inhalation: Get medical aid immediately. Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. 
Handling and Storage:
Handling: Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.
Storage: Store in a cool, dry place. Keep container closed when not in use.