3,4-Difluorobenzyl chloride (698-80-6) is called for 3,4-Difluorobenzylchloride,98% ; JRD-0330 ; BBV-155272 ; CID2736954 ; 4-(chloromethyl)-1,2-difluoro-benzene ; TL8004912 ; I01-2567 ,and so on. 3,4-Difluorobenzyl chloride (698-80-6) is usually clear colorless to faintly yellow liquid.

IUPAC Name: 4-(Chloromethyl)-1,2-difluorobenzene
CAS: 698-80-6
Molecular Formula: C₇H₅ClF₂
Molecular Weight: 162.56
Molecular structure:
Sensitive:  Lachrymatory 
ACD/LogD (pH 5.5): 2.5 
ACD/LogD (pH 7.4): 2.5 
ACD/BCF (pH 5.5): 46.8 
ACD/BCF (pH 7.4): 46.8 
ACD/KOC (pH 5.5): 545.98 
ACD/KOC (pH 7.4): 545.98 
H bond acceptors: 0 
H bond donors: 0 
Freely Rotating Bonds: 1 
Index of Refraction: 1.485 
Molar Refractivity: 36 cm³ 
Molar Volume: 125.5 cm³ 
Polarizability: 14.27 10^-24cm³ 
Surface Tension: 31.2 dyne/cm 
Density: 1.294 g/cm³ 
Flash Point: 65.6 °C 
Enthalpy of Vaporization: 40.04 kJ/mol 
Boiling Point: 181.3 °C at 760 mmHg 
Vapour Pressure: 1.17 mmHg at 25°C 

 3,4-Difluorobenzyl chloride (698-80-6) is commonly used as pharmaceutical intermediate.

Hazard Codes:  C
Risk Statements:  34-20/22 (34:  Causes burns 20/22:  Harmful by inhalation and if swallowed)
Safety Statements:  45-36/37/39-26 (45:  In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) 36/37/39:  Wear suitable protective clothing, gloves and eye/face protection 26:  In case of contact with eyes, rinse immediately with plenty of water and seek medical advice)
RIDADR:  1760
Hazard Note:  Corrosive/Lachrymatory
HazardClass:  8
PackingGroup:  III

Removal in wastewater treatment of 3,4-Difluorobenzyl chloride (698-80-6) can be stated as follows:
Total removal:57.91  percent
Total biodegradation:0.08  percent
Total sludge adsorption:5.52  percent
Total to Air:52.31  percent
(using 10000 hr Bio P,A,S)