Empirical Formula: C₈H₄ClNO
Molecular Weight: 165.5765 g/mol
Index of Refraction: 1.567
Density: 1.32 g/cm³
Flash Point: 128.9 °C
Melting point: 68-70 °C(lit.)
Sensitive: Moisture Sensitive
Enthalpy of Vaporization: 52.88 kJ/mol
Boiling Point: 289.5 °C at 760 mmHg
Vapour Pressure: 0.00219 mmHg at 25 °C
Appearance: Almost white to beige crystalline powder
Structure of 4-Cyanobenzoyl chloride (CAS NO.6068-72-0):
              
IUPAC Name: 4-Cyanobenzoyl chloride
Product Category of 4-Cyanobenzoyl chloride (CAS NO.6068-72-0): Aromatic Halides (substituted);Analytical Chemistry;Benzonitriles (Building Blocks for Liquid Crystals);Enantiomer Excess & Absolute Configuration Determination

 4-Cyanobenzoyl chloride (CAS NO.6068-72-0) hasn't been listed as a carcinogen by NTP, IARC, ACGIH, or CA Prop 65.

Hazard Codes: C
Risk Statements: 34 
R34:Causes burns.
Safety Statements: 26-36/37/39-45-24/25 
S24/25:Avoid contact with skin and eyes. 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection. 
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)

 4-Cyanobenzoyl chloride , its cas register number is 6068-72-0. 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: Do not induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
In addition, 4-Cyanobenzoyl chloride (CAS NO.6068-72-0) could be exposured to moist air or water. It is not compatible with strong bases, alcohols, and you must not take it with incompatible materials. And also prevent it to broken down into hazardous decomposition products: hydrogen chloride, nitrogen oxides, phosgene, carbon monoxide, carbon dioxide.