Physical Properties
| Physical state at 20 °C | Solid | Yellow powder | Odorless |
| Melting point/ Freezing point [°C] | 111 °C |
Packings
25kg
25g
Safety Information and Hazard Symbols
Symbol: GHS06, GHS08
Signal Word: Danger
UN No.: 2811
IMCO Class No.: 6.1
Packing Group: III
Hazardous Statement: H301-H351
Precaution Statement: P281-P301 + P310
Signal Word: Danger
UN No.: 2811
IMCO Class No.: 6.1
Packing Group: III
Hazardous Statement: H301-H351
Precaution Statement: P281-P301 + P310
Specifications
| Appearance | Yellow to orange brown powder |
| Melting point | 110 – 116°C |
| Transition range pH 2.9 to pH 4.0 | Red to yellow |
| Appearance of solution | 0.1% solution in ethanol is clear |
| Absorption maxima in ethanol | 403 – 407 nm |
| Specific absorptivity A 1%/1cm (λmax; 0.005%; ethanol; calculated on dried substance) | 1100 – 1300 |
| Loss on drying (40°C; 1 hpa) | Max. 5.0% |
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