Description
| CAS | 7789-09-5 |
| Molecular Formula | (NH4)2Cr2O7 |
| Molecular Weight | 252.06 |
| Shelf Life | 60 Months |
| Physical Properties | |||
| Physical State at 20 °C | Solid | Colour | Orange to red |
| Odour | Odorless | pH Value | 3 – 4 |
| Melting Point/ Freezing Point [°C] | 170 °C | Decomposition Point [°C] | 170 °C |
| Auto-Ignition Temperature [°C] | 218°C | Density [g/cm3] | 2.15 |
| Solubility in Water [% weight] | 360 g/l (20°C) | Oxidising Properties | The substance or mixture is classified as oxidizing with the subcategory 2 |
| Specifications | |||
| Appearance | Orange colored crystalline powder | Assay (On Anhydrous Basis) | Min 99.5% |
| Insoluble Matter | Max 0.005% | Chloride (Cl) | Max 0.005% |
| Sulphate (So4) | Max 0.01% | Loss On Drying (At 105°C) | Max 3.0% |
| Calcium (Ca) | Max 0.0025% | Sodium (Na) | Max 0.02% |
| Dangerous Goods Information | |||
| UN Number | 1439 | DG Class | 5.1 |
| Safety Information & Hazard Symbols | |
| Symbol | GHS03, GHS05, GHS06, GHS08, GHS09 |
| Signal Word | Danger |
| Hazard Statement | H272-H301-H312-H314-H317-H330-H334-H340-H350-H360FD-H372-H410 |
| Precaution Statement | P201-P220-P260-P273-P280-P284 |















