Sodium Dichromate

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
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)

APPEARANCE: Bright Red

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.

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

PACKAGING:

Local – 50kg HDPE Bag with Airtight inside polylinner
Export- 50 kg fibre drums.

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%