Description
| CAS | 72-48-0 |
| Molecular Formula | C14H8O4 |
| Molecular Weight | 240.22 |
| Shelf Life | 60 Months |
| Physical Properties | |||
| Physical State at 20 °C | Solid | Colour | Orange powder |
| pH Value | 5 – 7.2 | Melting Point/ Freezing Point [°C] | 279 – 283 °C |
| Boiling Point [°C] | 430°C | Solubility in Water [% weight] | Sparingly soluble in water |
| Specifications | |||
| Appearance | Orange colored powder | pH 5.5- 6.8 | Yellow to reddish-violet |
| Absorption Maxima in Naoh 0.01 Mol/L (Lmax1) | 564 – 568 nm | Absorption Maxima in Naoh 0.01 Mol/L (Lmax2) | 605 – 609 nm |
| Absorptivity (A 1%/1Cm; at Lmax2) | Min 525 | Sulphated Ash | Max 1% |
| Loss On Drying | Max 5% | Absorptivity (A 1%/1Cm; at Lmax1) | Min 625 |
| Dangerous Goods Information | |||
| UN Number | – | DG Class | – |
| Safety Information & Hazard Symbols | |
| Symbol | GHS07 |
| Signal Word | Warning |
| Hazard Statement | H302-H319 |
| Precaution Statement | H302-H319 |















