Description
4-(4-Nitrophenylazo) resorcinol; Azoviolet
| CAS | 74-39-5 |
| Molecular Formula | C12H9N3O4 |
| Molecular Weight | 259.22 |
| Shelf Life | 60 Months |
| Physical Properties | |||
| Physical State at 20 °C | Solid | Colour | Red powder |
| Odour | Odorless | Melting Point/ Freezing Point [°C] | 195 – 200 °C |
| Solubility in Water [% weight] | Insoluble in water | ||
| Specifications | |||
| Appearance | Red powder | Ash Content | Max 0.5% |
| Sensitivity | Detects min 1 ppm Mg | Absorption Maxima (Methanol + 1 Ml of 0.1 N Naoh) | 439 – 445 nm |
| Absorptivity (A 1%/1Cm; at Lmax) | 1430 | Loss On Dryig (At 110°C) | Max 8% |
| Dangerous Goods Information | |||
| UN Number | – | DG Class | – |
| Safety Information & Hazard Symbols | |
| Symbol | GHS07 |
| Signal Word | Warning |
| Hazard Statement | H315-H319 |
| Precaution Statement | P305 + P351 + P338 |















