Molecular Formula: C₁₂H₁₂Cl₄Ru₂
Molar mass: 500.18 g/mol
Boiling Point: 78.8 °C at 760 mmHg 
Vapour Pressure: 101 mmHg at 25°C
Appearance: Orange crystal powder
Product categories of Benzeneruthenium(II) chloride dimer (CAS NO.37366-09-9): cyclic and Ru (Ruthenium) Compounds;Transition Metal Compounds;Classes of Metal Compounds;Catalysts for Organic Synthesis;Homogeneous Catalysts;Synthetic Organic Chemistry;Catalysis and Inorganic Chemistry;Ru Catalysts
Structure of Benzeneruthenium(II) chloride dimer (CAS NO.37366-09-9):
                      
H-Bond Donor: 0
H-Bond Acceptor: 0
IUPAC Name: Benzene; dichlororuthenium
Canonical SMILES: C1=CC=CC=C1.C1=CC=CC=C1.Cl[Ru]Cl.Cl[Ru]Cl
InChI: InChI=1S/2C6H6.4ClH.2Ru/c2*1-2-4-6-5-3-1;;;;;;/h2*1-6H;4*1H;;/q;;;;;;2*+
2/p-4 
InChIKey: YGXMUPKIEHNBNQ-UHFFFAOYSA-J

Carcinogenicity of Benzeneruthenium(II) chloride dimer (CAS NO.37366-09-9) hasn't been listed as a carcinogen by NTP, IARC,ACGIH, or CA Prop 65. And its toxicological properties have not been fully investigated.

Hazard Codes: Xi
Risk Statements:
36:  Irritating to the eyes
37:  Irritating to the respiratory system
38:  Irritating to the skin
Safety Statements:
26:  In case of contact with eyes, rinse immediately with plenty of water and seek medical advice

 Benzeneruthenium(II) chloride dimer ,its cas register number is 37366-09-9.It also can be called Benzene ruthenium (Ⅱ) chloride and Dichloro(benzene)rutheniumdimer .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 shoesmedical 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, Benzeneruthenium(II) chloride dimer (CAS NO.37366-09-9) 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: hydrogen chloride, carbon dioxide, carbon monoxide.