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.