Trade Name: Fast Red F2R C.I. Number: Pigment Red 2 CAS Number: 6041-94-7 EU Number: 227-930-1 Chamical Family: Mono azo 2. Physical, Chemical and Fastness Properties Molecular Weight: 436.29 Molecular Formula: C23H15Cl2N3O2 P.H. Value: 6.5-7.5 Density: 1.5 Oil Absorption£¨ml/100g£©: 40-50 Light Fastness: 6 Heat Resistance: 120¡æ Water Resistance: 4 Oil Resistance: 4 Acid Resistance: 4 Alkali Resistance: 4 3. Application Shade: Yellowish Red Main Application: Water base Ink , Textile Printing