Sodium dichromate dihydrate is a odouless orange crystalline product that dissolves readily in water. It is hygroscopic material and readily absorbs moisture from the atmosphere.
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
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
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
Packaging:
- 50 kg inner layer polyethylene, outer layer HDPE woven bags
- 1000 kg Jumbo bags. Palletized and shrink wrapped
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 forklift or crane hooks, so as to prevent damage to bags