Physical Properties
| Physical state at 20 °C | Solid | Odour | Odorless |
| Melting point/ Freezing point [°C] | 290 °C | Solubility in water [% weight] | Soluble in water |
| Colour | Dark green powder | pH value | 3.1 |
Packings
1000g
100g
25g
10g
Safety Information and Hazard Symbols
Specifications
| Appearance | Dark green powder |
| Dye content (by spectrophotometry) | Min 60% |
| Transition range (pH 6.8 – 8.0) | Violet Red – Yellow |
| Solubility (0.1% in 50% ethanol) | Clear solution |
| Absorption maxima (50% ethanol + 2 ml acetic acid) | 539 – 544 nm |
| Absorptivity (A 1%/1cm; at λmax; in 50% ethanol + 2 ml acetic acid) | Min 900 |
| Loss on drying (at 110°C) | Max 12% |
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