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SODIUM BICHROMATE

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

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