GRADES: Tech/ EXTRA PURE / LR / AR / GR
Sodium Dichromate is a soluble crystalline solid compound, usually obtained as red or orange crystals and used as an oxidizing agent, corrosion inhibitor, and mordant.
Formula Na 2Cr2O7 Also called (not in technical usage) sodium dichromate.
Molar Mass: 261.97g/mol (anhydrous)
Sodium Dichromate
| Physical Properties | |
| Odour | Odourless |
| Density | 2.52 g/cm3 |
| Melting point | 356.7 °C (674.1 °F; 629.8 K) |
| Boiling point | 400 °C (752 °F; 673 K) decomposes |
| Solubility in water | 73 g/100 ml at 25 °C) |
| Solubility in other solvents | soluble in methanol, ethanol |
| Refractive index (nD) | 1.661 (dehydrate) |
| SPECIFICATION – Sodium Dichromate | ||
| SR NO. | TEST | EXTRA PURE / LR |
| 1. | Description | Orange Red Crystals or Crystalline powder |
| 2. | Identity | Na : Passes Test Cr2O7 : Passes Test |
| 3. | Test Solution | The Solution is clear |
| 4. | Assay | NLT 99% |
| 5. | Chloride ( Cl ) | NMT 0.03% |
| 6. | Sulphate ( SO4) | NMT 0.2% |
| 7. | Potassium (K) | NMT 0.1% |
| SR NO. | TEST | AR/ GR |
| 1. | Description | Orange Red Crystals or Crystalline powder |
| 2. | Identify | Na : Passes Test Cr2O7 : Passes Test |
| 3. | Test Solution | The Solution is clear |
| 4. | Assay | NLT 99.5% |
| 5. | Substance soluble in Water | NMT 0.005% |
| 6. | Chloride ( Cl ) | NMT 0.001% |
| 7. | Sulphate ( SO4) | NMT 0.01% |
| 8. | Calcium (Ca) | NMT 0.002% |
| 9. | Copper (Cu) | NMT 0.01% |
| 10. | Iron (Fe) | NMT 0.002% |
| 11. | Lead (Pb) | NMT 0.002% |
| 12. | Potassium (K) | NMT 0.01% |
APPEARANCE:
Bright Red
PROPERTIES:
Sodium dichromate is the inorganic compound with the formula Na2Cr2O7. Usually, however, the salt is handled as its dihydrate Na2Cr2O7•2H2O. Virtually all chromium ore is processed via conversion to sodium dichromate and virtually all compounds and materials based on chromium are prepared from this salt.
USES / APPLICATIONS:
It is mainly used in the manufacturing of Chromic acid, chrome pigment and other chromic salts. It is also used in the industries of tanning leather, textile, electroplating, medicine, oil & fat, petroleum, dye and drilling, etc.
PACKAGING:
Local – 50kg HDPE Bag with Airtight inside polylinner
Export- 50 kg fibre drums.