Empirical Formula: C₁₂H₆O₂
Molecular Weight: 182.1748
EINECS: 201-441-3 
Index of Refraction: 1.746
Density: 1.424 g/cm³
Flash Point: 150.2 °C
Enthalpy of Vaporization: 60.85 kJ/mol
Boiling Point: 362.5 °C at 760 mmHg
Vapour Pressure: 1.92E-05 mmHg at 25 °C
Solubility: Soluble in alcohol, hot benzene, hot toluene, insoluble in water
Product categories: Pharmaceutical Intermediates;Anthraquinones, Hydroquinones and Quinones;Guanylyl Cyclase Inhibitors;Carbonyl Compounds;Cyclic Nucleotide Metabolism;Ketones
Structure of Acenaphthenequinone (CAS NO.82-86-0):
         

 Acenaphthenequinone (CAS NO.82-86-0) has been used for intermediate of dye and pesticide. It is also used in chemical research as a drug and therapeutic agent.

 Acenaphthenequinone (CAS NO.82-86-0) is a quinone derived from acenaphthene.

Carcinogenicity of Acenaphthenequinone (CAS NO.82-86-0) hasn't been listed as a carcinogen by NTP, IARC,ACGIH, or CA Prop 65. And its toxicological properties have not been fully investigated.You can see actual entry in RTECS for complete information.

Reported in EPA TSCA Inventory.

Moderately toxic by an unspecified route. When heated to decomposition it emits acrid smoke and irritating vapors.
 

Hazard Codes: Xi
Risk Statements: 36/37/38
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 26-36-37/39
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36:Wear suitable protective clothing. 
S37/39:Wear suitable gloves and eye/face protection.

 Acenaphthenequinone ,its cas register number is 82-86-0. It also can be called Acenaphthylene-1,2-dione and 1,2-acenaphthylenedione . It is hazardous,so the first aid measures and others should be known. Such as: When on the skin: first,should flush skin with plenty of water immediately for at least 15 minutes while removing contaminated clothing. Secondly,Get medical aid. Or in the eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Then get medical aid soon. While ,it's Inhaled: Remove from exposure and move to fresh air immediately.Give artificial respiration while not breathing. When breathing is difficult, give oxygen. And as soon as to get medical aid. Then you have the ingesting of the product : Wash mouth out with water,and get medical aid immediately.Notes to physician: Treat supportively and symptomatically.
In addition, Acenaphthenequinone (CAS NO.82-86-0) can be stable under normal temperature and pressure conditions.It is not compatible with strong oxidizing agents, and you must not take it with incompatible materials. And also prevent it to broken down into hazardous decomposition products: carbon dioxide, carbon monoxide.