IUPAC Name: 1-(3,4-Difluorophenyl)ethanone
Canonical SMILES: CC(=O)C1=CC(=C(C=C1)F)F
InChI: InChI=1S/C8H6F2O/c1-5(11)6-2-3-7(9)8(10)4-6/h2-4H,1H3
InChIKey: VWJSSJFLXRMYNV-UHFFFAOYSA-N
Molecular Weight: 156.129446 [g/mol]
Molecular Formula: C₈H₆F₂O
XLogP3: 2
H-Bond Donor: 0
H-Bond Acceptor: 3 
EINECS: 206-717-7
Product Categories: Acetophenone Series; Aromatic Acetophenones & Derivatives (substituted); ketone; Miscellaneous; Adehydes, Acetals & Ketones; Fluorine Compounds; C7 to C8; Carbonyl Compounds; Ketones 
Water Solubility: INSOLUBLE 
Index of Refraction: 1.472
Molar Refractivity: 36.26 cm³
Molar Volume: 129.3 cm³
Surface Tension: 31.5 dyne/cm
Density: 1.206 g/cm³
Flash Point: 77 °C
Enthalpy of Vaporization: 44.27 kJ/mol
Boiling Point: 206.5 °C at 760 mmHg
Vapour Pressure: 0.237 mmHg at 25 °C
Appearance: clear yellowish liquid after melting
Melting Point of 3,4-Difluoroacetophenone (CAS NO.369-33-5): 19-20 °C(lit.)

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.
WGK Germany: 3
Hazard Note of 3,4-Difluoroacetophenone (CAS NO.369-33-5): Irritant

 3,4-Difluoroacetophenone (CAS NO.369-33-5), its Synonyms are 1-(3,4-Difluorophenyl)ethan-1-one ; Ethanone, 1-(3,4-difluorophenyl)- ; 3',4'-Difluoroacetophenone ; 1-(3,4-Difluorophenyl)ethanone .