| CAS No. | : | 8004-87-3 |
| Synonym | : | Basic violet 3 |
| Appearance | : | Dark green crystals or crystalline powder |
| Absorption maxima in 50% ethanol | : | 579 – 589 nm |
| Absorptivity (A 1%/1cm; at λmax) | : | Min. 1500 |
| Ratio λmax.P+/-15 nm | : | 1.060 – 1.190 |
| Loss on drying (at 110oC) | : | Max. 10.0% |
