Sodium Dichromate |
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Sodium dichromate dihydrate is a odourless orange crystalline product that dissolves readily in water. It is hygroscopic material and readily absorbs moisture from the atmosphere.
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Physical properties:
S.No |
Description |
Specifications |
1 |
Apperarance |
Bright Orange Crystals |
2 |
Chemical formula |
Na Cr2 O ..2H2 O |
3 |
Molecular Weight |
298.0 |
4 |
Solubility |
Readily soluble in water |
5 |
Specific Gravity (at 20C |
2.35 |
6 |
Heat of Solution cal /gm |
Minus 28.2 |
7 |
Stability in Air |
Deliquescent |
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Chemical properties:
S.No |
Description |
Specifications |
1 |
Na 2 Cr 2 O 7 .2H 2 O (%) |
99.0 min |
2 |
Sulphate as Na 2 SO 4 (%) |
0.2 max |
3 |
Chlorides as NaCl (%) |
0.4 max |
4 |
Iron as Fe (%) |
.003 max |
5 |
PH (10% solution) |
3.6 – 4.4 |
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| Applications
- Source in preparing chromium based derivative.
- Screen printing & Photographic engraving
- Electroplating
- Pyrotechnics and explosives
- Pigment preparation like Chrome oxide green, Lead Chromate etc.
- Wood Preservative for protection from termites and fungi.
- Metal Treating and corrosion inhibitor
- Oil well drilling as treating agents in drilling mud systems.
- Catalyst for the chromium metal production
- As an oxidizing agent in organic synthesis. |
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Packaging:
- 50 kg inner layer polyethylene, outer layer HDPE woven bags.
- 1000 kg Jumbo bags. Palletized and shrink wrapped. |
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Storage Conditions:
- Store in cool and dry places.
- Keep away from sunlight and heat sources, combustible organic materials, Volatile organic compounds, flammable solvents and other readily oxidizable material.
- Avoid storage on wood floors.
- Remove and dispose of any spilled dichromate, don’t return to original container.
- Protect against physical damage by handling vehicles like fork lift or crane hooks, so as to prevent damage to bags. |
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Physical Properties
Data Sheet |
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Material Safety
Data Sheet |
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