The Molecular Structure of 1,1'-Biphenyl, 2,2',3,3',4,4',5,5',6,6'-decafluoro- (CAS NO.434-90-2):

Empirical Formula: C₁₂F₁₀
Molecular Weight: 334.1124 
IUPAC: 1,2,3,4,5-pentafluoro-6-(2,3,4,5,6-pentafluorophenyl)benzene 
Stability: Stable. Incompatible with strong oxidizing agents
Appearance: white crystals or powder
Nominal Mass: 334 Da
Average Mass: 334.1124 Da
Monoisotopic Mass: 333.984032 Da 
Index of Refraction: 1.429
Molar Refractivity: 50.78 cm³
Molar Volume: 196.8 cm³
Surface Tension: 27.7 dyne/cm
Density: 1.697 g/cm³
Flash Point: 68.5 °C
Enthalpy of Vaporization: 42.43 kJ/mol
Boiling Point: 206.1 °C at 760 mmHg
Vapour Pressure: 0.347 mmHg at 25°C 
Melting Point: 67.5 °C 
log P (octanol-water): 5.760 (none)  at 25°C 
Atmospheric OH Rate Constant: 1.37E-13 cm3/molecule-sec  at 25°C 
InChI
InChI=1/C12F10/c13-3-1(4(14)8(18)11(21)7(3)17)2-5(15)9(19)12(22)10(20)6(2)16
Smiles
Fc1c(F)c(F)c(c2c(F)c(F)c(F)c(c2F)F)c(c1F)F 
Product Categories: Biphenyl & Diphenyl ether;DA - DHChemical Class;600 Series Wastewater Methods;Alpha Sort;D;DAlphabetic;FluoroEPA;Halogenated;Method 625;Volatiles/ Semivolatiles;Aryl;C9 to C12;Halogenated Hydrocarbons;Fluoro 

Hazard Codes: XiT
Risk Statements: 36/37/38-63-43-23/24/25-45 
R36/37/38:Irritating to eyes, respiratory system and skin
R63:Possible risk of harm to the unborn child
R43:May cause sensitization by skin contact
R23/24/25:Toxic by inhalation, in contact with skin and if swallowed
R45:May cause cancer
Safety Statements :22-24/25-36/37-23-53 
S22:Do not breathe dust
S24/25:Avoid contact with skin and eyes
S36/37:Wear suitable protective clothing and gloves
S23:Do not breathe vapour
S53:Avoid exposure - obtain special instructions before use
RIDADR UN: 3152 9/PG 2
WGK Germany: 3
Hazard Note: Irritant
HazardClass: 9
PackingGroup: II

 1,1'-Biphenyl, 2,2',3,3',4,4',5,5',6,6'-decafluoro- (CAS NO.434-90-2) is also called as Decafluorobiphenyl ; EINECS 207-107-3 ; Decafluorobiphenyl .