GRADES: EXTRA PURE / LR / AR / GR
Potassium chromate is the inorganic compound with the formula (K2CrO4. This yellow solid is the potassium salt of the chromate anion. It is a common laboratory chemical. It is a class two carcinogen
Molar mass: 194.19 g·mol−1
| Physical properties | |
| Odour | Odourless |
| Density | 2.7320 g/cm3 |
| Melting point | 968 °C (1,774 °F; 1,241 K) |
| Boiling point | 1,000 °C (1,830 °F; 1,270 K) |
| Solubility in water | 62.9 g/100 mL (20 °C) 75.1 g/100 mL (80 °C) 79.2 g/100 mL (100 °C) |
| Solubility | insoluble in alcohol |
| Refractive index (nD) | 1.74 |
| SPECIFICATION – POTASSIUM CHROMATE | ||
| SR NO. | TEST | EXTRA PURE / LR |
| 1. | Description | Lemon yellow fine crystals |
| 2. | Identity | K: Passes Test CrO4 passes test |
| 3. | Test Solution (10% w/w water) | The solution is clear |
| 4. | Assay | NLT 99% |
| 5. | PH value (5% w/w water) | 8.5 – 10.0 |
| 6. | Chloride ( Cl ) | NMT 0.01% |
| 7. | Sulphate ( SO4) | NMT 0.05% |
| 8. | Calcium (Ca) | NMT 0.01% |
| 9. | Loss on drying ( 105° C) | NMT 1% |
| SR NO. | TEST | EXTRA PURE / LR |
| 1. | Description | Lemon yellow crystals or crystalline powder |
| 2. | Solution(10% w/v aqueous) | Should be clear |
| 3. | Assay % w/w | 99.5 – 100.5 |
| 4. | Insoluble matter % w/w | 0.003 |
| 5. | Acidity % w/w | NIL |
| 6. | Alkalinity % w/w | 1 ml NLT 1% |
| 7. | Chloride ( Cl ) % w/w | 0.001 |
| 8. | Sulphate ( SO4)% w/w | 0.02 |
| 9. | Aluminium (Al) % w/w | 0.003 |
| 10. | Calcium (Ca)% w/w | 0.005 |
| 11. | Sodium (Na) % w/w | 0.05 |
Potassium chromate enjoys a wide variety of industrial uses. In the textile industry, manufacturers use potassium chromate to tan leather and dye clothing items and fabrics, meaning it can identify the presence, location and quantity of certain elements such as iron. It functions as an oxidizing agent in manufacturing and scientific experiments.
PACKAGING:
Local – 50kg HDPE Bag with Airtight inside polylinner
Export- 50 kg fibre drums.