| S.No | Description | Specifications |
|---|---|---|
| 1 | Apperarance | Bright Orange Crystals |
| 2 | Chemical formula | Na Cr2 O7 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 |
Sodium Dichromate
Sodium Dichromate
Sodium Dichromate is a strong oxidising agent and a source in preparing chromium based derivatives. It is used in metal passivation and finds applications across diverse industries including pigments and coatings, screen printing in photographic engraving, electroplating, pyrotechnics and explosives.
As a wood preservative, Sodium Dichromate protects wood from termites and fungi while in metal treatment it works as a corrosion inhibitor. It is also used in pigment preparations like chrome oxide green and lead chromate.
| S.No. | Description | Units | Typical Values |
|---|---|---|---|
| 1 | Sodium Bichromate as Na Cr2 O7 2H2 O (%) | % w/w | 99.50 ± 0.1 |
| 2 | pH of (10% Solution) | 3.8 – 4.2 | |
| 3 | Matter insoluble in water | % w/w | 0.02 – 0.05 |
| 4 | Sulphate as SO4 (%) | % w/w | 0.10 – 0.17 |
| 5 | Chlorides as Cl (%) | % w/w | 0.10 Max |
| 6 | lron as Fe (%) | % w/w | 0.001 to 0.002 |
| 7 | Moisture at 105 ° C | % w/w | 11.00 – 11.50 |
- 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
- 25 kg and 50 kg HDPE bags with inner polyethylene layer.
- 1000 kg Jumbo bags.
- 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
