Listing ID #4012535
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| potassium dichromate | |
| odour | odourless |
| density | 2.676 g/cm3, solid |
| melting point | 398 °c (748 °f; 671 k) |
| boiling point | 500 °c (932 °f; 773 k) decomposes |
| solubility in water | 4.9 g/100 ml (0 °c) 102 g/100 ml (100 °c) |
| solubility | insoluble in alcohol |
| refractive index (nd) | 1.738 |
| sr no. | test | tech | extra pure / lr | ar/ gr |
| 1. | description | bright orange red crystals | bright orange red crystals | orange red crystals and crystalline powder |
| 2. | clarity | should be clear | should be clear | should be clear |
| 3. | identity | k: passes test cro4 passes test | k: passes test cro4 passes test | k: passes test cro4 passes test |
| 4. | assay % w/w | 98% | nlt 99% | 99.9 min |
| 5. | ph 5% of solution (carbon dioxide-free water) |
3.7 - 3.9 | 3.7 - 3.9 | 3.7 - 3.9 |
| 6. | insoluble matter % w/w | 0.30% max. | 0.005 | 0.003 |
| 7. | chloride ( cl )% w/w | 0.50% | nmt 0.01% | 0.0005 |
| 8. | sulphate ( so4) | 0.30% max. | nmt 0.02% | nmt 0.01 |
| 9. | calcium (ca) | 0.10% max. | 0.003 | 0.002 |
| 10. | moisture | 0.5% max. | nmt 0.5% | nmt 0.5% |
| 11. | sodium (na) | 0.10 max | nmt 0.05% | nm |
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