Physical Properties
| Physical state at 20 °C | Solid | pH value | 5 – 7.2 |
| Melting point/ Freezing point [°C] | 279 – 283 °C | Solubility in water [% weight] | Sparingly soluble in water |
| Colour | Orange powder | Boiling point [°C] | 430°C |
Packings
100g
25g
Safety Information and Hazard Symbols
Symbol: GHS07
Signal Word: Warning
Hazardous Statement: H302-H319
Precaution Statement: P305 + P351 + P338
Signal Word: Warning
Hazardous Statement: H302-H319
Precaution Statement: P305 + P351 + P338
Specifications
| Appearance | Orange colored powder |
| pH 5.5- 6.8 | Yellow to reddish-violet |
| Absorption maxima in NaOH 0.01 mol/L (λmax1) | 564 – 568 nm |
| Absorption maxima in NaOH 0.01 mol/L (λmax2) | 605 – 609 nm |
| Absorptivity (A 1%/1cm; at λmax2) | Min 525 |
| Sulphated ash | Max 1% |
| Loss on drying | Max 5% |
| Absorptivity (A 1%/1cm; at λmax1) | Min 625 |
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