IUPAC Name 4-bromo-2-(4-chlorophenyl)-5-(trifluoromethyl)-1H-pyrrole-3-carbonitrile CAS Name :1H-Pyrrole-3-carbonitrile, 4-bromo-2-(4-chlorophenyl)-5-(trifluoromethyl) CAS Registry No.122454-29-9 Molecular FormulaC12H5BrClF3N2 Molecular Weight349.5 Structural Formula Chemical And Physical Properties These properties are typical but do not constitute specifications: Appearance White to off-white powder Purity (Chromatography) Minimum 95.0% w/w Water Content (Karl-Fisher Titration)Maximum 0.5% w/w Particle Size Distribution (Laser Diffraction) D50: 4.0-10.0 µm; D99: maximum 25.0 µm Oil Absorption Value (ISO 787-5) 28 ml per 100 g Density 1.714 g/ml at 20°C Vapour Pressure1.9 x 10-8 Pa at 20°C; 4.6 x 10-8 Pa at 25°C Dissociation Constant pKa = 7.08 at 26°C pH5.16 at 22°C (0.1% w/v dispersion in distilled water)