IUPAC Name: 2-[4-(cyanomethyl)phenyl]acetonitrile 
Empirical Formula: C₁₀H₈N₂
Molecular Weight: 156.1839g/mol
EINECS: 210-751-8 
Structure of 1,4-Benzenediacetonitrile (CAS NO.622-75-3):

Index of Refraction: 1.549
Molar Refractivity: 45.17 cm³
Molar Volume: 141.8 cm³
Polarizability: 17.91×10^-24cm³
Surface Tension: 49.9 dyne/cm
Density: 1.101 g/cm³
Flash Point: 163.6 °C
Enthalpy of Vaporization: 57.7 kJ/mol 
Meiting Point: 94-96 °C(lit.)
Boiling Point: 334 °C at 760 mmHg
Vapour Pressure: 0.000131 mmHg at 25°C 
Physical Appearance: Light yellow to brown crystalline powder
Product Categories: Aromatic Nitriles;C10 to C27;Cyanides/Nitriles;Nitrogen Compounds 
Canonical SMILES: C1=CC(=CC=C1CC#N)CC#N
InChI: InChI=1S/C10H8N2/c11-7-5-9-1-2-10(4-3-9)6-8-12/h1-4H,5-6H2
InChIKey: FUQCKESKNZBNOG-UHFFFAOYSA-N
 

Hazard Codes: Xn,Xi
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: 26-37/39-24/25-22-36 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S37/39:Wear suitable gloves and eye/face protection. 
S24/25:Avoid contact with skin and eyes. 
S22:Do not breathe dust. 
S36:Wear suitable protective clothing.
RIDADR: 3276
WGK Germany: 3
HazardClass: 6.1
PackingGroup: III

  1,4-Benzenediacetonitrile , its cas register number is 622-75-3. It also can be called 1,4-Bis(cyanomethyl)benzene ; AI3-28790 ; NSC 513731 ; p-(Cyanomethyl)benzyl cyanide ; p-Benzenediacetonitrile ; p-Bis(cyanomethyl)benzene ; p-Phenylenediacetonitrile ; p-Xylylene dicyanide . 1,4-Benzenediacetonitrile (CAS NO.622-75-3) is a light yellow to brown crystalline powder which is harmful by inhalation, in contact with skin and if swallowed and is irritating to eyes, respiratory system and skin.