Physical Properties
| Physical state at 20 °C | Solid | Colour | Dark brown |
Packings
25g
5g
Safety Information and Hazard Symbols
Symbol: GHS08
Signal Word: Danger
Hazardous Statement: H350
Precaution Statement: P201-P308 + P313
Signal Word: Danger
Hazardous Statement: H350
Precaution Statement: P201-P308 + P313
Specifications
| Appearance | Dark brown to very dark brown or black powder |
| Solubility (0.1 % in distilled water) | Clear blue solution |
| Dye content | Min. 85.0% |
| Absorption maxima | 606 – 611nm |
| Absorptivity (A 1%/1cm; at λmax; on dried substances) | Min. 800.0 |
| Loss on drying (at 110°C) | Max. 10.0% |
| Suitability (for microscopy) | Passes test |
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