IUPAC Name: 4-bromo-2-fluoro-1-methylbenzene
Following is the structure of 4-Bromo-2-Fluorotoluene (CAS NO.51436-99-8):
                      
Molecular formula:C₇H₆BrF
Molecular Weight: 189.02
EINECS: 257-201-3 
Index of Refraction: 1.526
Molar Refractivity: 38.76 cm³
Molar Volume: 126.1 cm³
Density: 1.498 g/cm³
Flash Point: 76.1 °C
Polarizability: 15.36 10^-24cm³
Surface Tension: 33.1 dyne/cm
Enthalpy of Vaporization: 40.22 kJ/mol
Boiling Point: 183.2 °C at 760 mmHg
Vapour Pressure: 1.07 mmHg at 25 °C
Appearance: colorless to light yellow liqui
Water Solubility of 4-Bromo-2-Fluorotoluene (CAS NO.51436-99-8): Insoluble
Product Categories: Fluorin-contained toluene series; Fluorobenzene; Aromatic Halides (substituted); Halogen toluene; Miscellaneous; Bromine Compounds; Fluorine Compounds; Aryl; C7; Halogenated Hydrocarbons
Canonical SMILES: CC1=C(C=C(C=C1)Br)F
InChI: InChI=1S/C7H6BrF/c1-5-2-3-6(8)4-7(5)9/h2-4H,1H3
InChIKey: YZFVUQSAJMLFOZ-UHFFFAOYSA-N

 4-Bromo-2-Fluorotoluene (CAS NO.51436-99-8) hasn't been listed as a carcinogen by ACGIH, IARC, NTP, or CA Prop 65. And the toxicological properties have not been fully investigated.

Hazard Codes : Xn,Xi
4-Bromo-2-Fluorotoluene's Risk Statements  :
R36/37/38:Irritating to eyes, respiratory system and skin.;
4-Bromo-2-Fluorotoluene's Safety Statements :
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.;
RIDADR : UN 2810
WGK Germany : 3
Hazard Note : Irritant
 

 4-Bromo-2-Fluorotoluene , its cas register number 51436-99-8. It also can be called 4-Brom-2-fluor-1-methylbenzol ; 4-Bromo-2-fluoro-1-methylbenzene ;and Benzene, 4-bromo-2-fluoro-1-methyl- .
 4-Bromo-2-Fluorotoluene (CAS NO.51436-99-8) should avoid the condition like incompatible materials, excess heat, exposure to moist air or water. It is not compatible with strong oxidizing agents. And also prevent it to broken down into hazardous decomposition products: carbon monoxide, carbon dioxide, hydrogen fluoride gas, hydrogen bromide. However, its hazardous polymerization has not been reported.