Solvent Blue 138 is used in coloring for printing inks, plastics, rubber, gasoline, oil, lubricants, wax, candle etc..
| Specification | Value |
| Appearance | Reddish blue powder |
| Density, g/cm3 | 0.63 |
| Heat Resistance, °C | 240 |
| Light Fastness | 6-7 |
| Acid Resistance | 5 |
| Alkali Resistance | 5 |
| Residue on 80 mesh, % | 5.0 max. |
| Water Soluble, % | 1.0 max. |
| Volatile Matter at 105°C, % | 1.0 max. |
| Tinting Strength, % | 95-105 |