PRODUCT SPECIFICATION
| TEST | SPECIFICATION |
| Appearance (Form) | Powder |
| Appearance (Color) | Dark blue-black |
| Melting Point | 101-104 °C |
| Maximum Absorption at γ max (nm) | 538 (±5) nm |
| Volatile Matter at 105°C | 5% Max |
| Iron | <250ppm |
| HPLC Purity | >95% |
| Heavy Metal | Passes Test |
