AVANSCHEM
Sodium Dichromate

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. 

Apperarance

Bright Orange Crystals

 

Chemical formula

Na Cr2 O, 2H2 O

 

Molecular Weight

298.0


Solubility

Readily soluble in water


Specific Gravity at 20C

2.35


Heat of Solution cal /gm

Minus 28.2


Stability in Air

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

Deliquescent

 


Applications

- Oil well drilling as treating agents in drilling mud systems
- Catalyst for the chromium metal production 
- As an oxidizing agent in organic synthesis
- Pyrotechnics
- Pigment preparation like chrome oxide green, lead chromate etc.
- Wood preservative for protection from termites and fungi
- Metal treating and corrosion inhibitor 
- Source in preparing chromium based derivative 
- Screen printing & Photographic engraving 
- Electroplating