Pigment red 49:1 Physical, Chemical and Fastness Properties
| Molecular Weight | 822.16 |
| Molecular Formula | C40H26N4O8S21/2Ba |
| P.H. Value | 7.0-8.0 |
| Density | 1.8 |
| Oil Absorption(ml/100g)% | 40-50 |
| Light Fastness | 5 |
| Heat Resistance | 160 (°C) |
| Water Resistance | 4 |
| Oil Resistance | 4 |
| Acid Resistance | 5 |
| Alkali Resistance | 4 |