GRADES: Tech/ EXTRA PURE / LR / AR / GR
Potassium dichromate is a chemical compound. It contains potassium and dichromate ions. It has a chemical formula of K2Cr2O7 (K2Cr). The chromium is in its +6 oxidation state.
Molar Mass: 294.185 g/mol
POTASSIUM DICHROMATE
| Physical Properties | |
| 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 |
| SPECIFICATION – POTASSIUM DICHROMATE | ||||
| 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% | NMT 0.05% |
APPEARANCE:
BRIGHT RED CRYSTILLINE
PROPERTIES:
It is a bright red crystalline solid. It is a strong oxidizing agent in acidic conditions. It is Non Absorbent, Water Soluble and Toxic.
USES / APPLICATIONS:
CLEANING, CONSTRUCTION, ETHANOL DETERMINATION LEATHER TANNING, PHOTOGRAPHY, SILVER TEST SULFUR DIOXIDE TEST, WOOD TREATMENT.
PACKAGING:
Local – 50kg HDPE Bag with Airtight inside polylinner.
Export- 50 kg fibre drums.