Desicca Chemical Sodium Dichromate: India’s Leading Supplier and Manufacturer
December 27, 2023

Sodium Dichromate is a chemical compound that holds immense importance in various industries. Known for its versatile applications, it serves as a key component in manufacturing processes across sectors such as textiles, pigments, and pharmaceuticals. 

Desicca Chemicals Pvt Ltd is India’s foremost Sodium Dichromate Manufacturer and Supplier. With a commitment to quality, affordability, and excellence, we take pride in offering this chemical with distinctive orange-red crystals or crystalline powder appearance. Our extensive range includes desiccants and pharma chemicals, all manufactured and supplied with utmost precision and care. Before delving into the details of our product, let’s explore the fundamental aspects of Sodium Dichromate.

Sodium Dichromate

Sodium Dichromate, a powerful and versatile chemical compound, is represented by the Sodium Dichromate Formula Na2Cr2O7. This compound consists of sodium ions (Na+) and dichromate ions (Cr2O7^2-), creating a distinctive structure that lends itself to a variety of industrial applications.

Sodium Dichromate Manufacturing Process

The manufacturing process involves several steps.  It is commonly used in various industrial applications, including the production of pigments, corrosion inhibitors, and as a reagent in certain chemical reactions. Here is a general overview of the Sodium Dichromate Manufacturing Process:

  • Manufacturing Process:

The manufacturing process of sodium dichromate involves several steps. Chromite Ore Extraction: The raw material of this chemical is chromite ore (FeCr2O4). The first step involves the extraction of chromite ore from mines.

  • Conversion to Sodium Chromate:

The chromite ore is processed to obtain sodium chromate (Na2CrO4). This is typically done by roasting the ore with sodium carbonate (Na2CO3) and limestone (CaCO3) in the presence of air.

The chemical reaction is as follows:

4FeCr2O4 +16Na2CO3 +7O2 →8Na2CrO4 +2Fe2O3 +16CO2​ 

  • Conversion to Sodium Dichromate:

By reacting with sulfuric acid (H2SO4), sodium chromate becomes sodium dichromate. The result is often obtained as a dihydrate (Na2Cr2O7·2H2O).

The chemical reaction is as follows:

2Na2CrO4 + 2H2SO4 → Na2Cr2O7 + 2Na2SO4 + 2H2O

  • Crystallization and Purification:

The sodium dichromate solution is then cooled to induce crystallization. This step helps to separate impurities from the sodium dichromate crystals.

  • Drying:

The crystallized sodium dichromate is dried to remove any remaining water content, resulting in the final product.

  • Packaging:

The dried sodium dichromate is packaged and prepared for distribution and use in various industrial applications.

It’s important to note that the manufacturing process involves handling toxic and environmentally hazardous materials. Stringent safety measures and environmental regulations should be followed to ensure the protection of workers and the environment.

Through our rigorous manufacturing practices, Desicca Chemicals guarantees a product that meets international standards and client expectations.

1.DescriptionOrange Red Crystals or Crystalline Powder
2. IdentityNa: Passes Test
Cr207: Passes Test
3.Test SolutionThe Solution is clear
4.AssayNLT 99%
5.Chloride (CL)NMT 0.03%
6.Sulphate ( SO4)NMT 0.2%
7.Potassium (K)NMT 0.1%

Sr. NoTestAR/GR
1.DescriptionOrange Red Crystals or Crystalline Powder
2. IdentifyNa: Passes TestCr2O7: Passes Test
3.Test SolutionThe Solution is clear
4.AssayNLT  99.5%
5.Substance soluble in WaterNMT 0.005%
6.Chloride ( Cl )NMT 0.001%
7.Sulphate ( SO4)NMT 0.01%
8.Calcium (Ca)NMT 0.002%
9.Copper (Cu)NMT 0.01%
10.Iron (Fe)NMT 0.002%
11.Lead (Pb)NMT 0.002%
12.Potassium (K)NMT 0.01%

                                                           Physical Properties
Density2.52 g/cm3
Melting Point356.7 °C (674.1 °F; 629.8 K)
Boiling Point400 °C (752 °F; 673 K) decomposes
Solubility in water73 g/100 ml at 25 °C)
Solubility in other solventssoluble in methanol, ethanol
Refractive index (nD)1.661 (dehydrate)

Uses of Sodium Dichromate

It finds applications across diverse industries owing to its unique properties. Some of the prominent Sodium Dichromate Uses include:

  • Metal finishing/surface treatment: corrosion resistance, paint adhesion properties, support cleaning the metal surface
  • Metalworking auxiliary
  • Electroplating
  • Pigment: Preparation of pigments and application as corrosion inhibitors
  • Ceramics: used in the production of colored glass and ceramic glazes
  • The catalyst for chromium metal production
  • Laboratory chemical
  • Initial product for chemical reactions
  • Chemical intermediate
  • Surface modifiers
  • Surface additive
  • Chromium source in preparing other chromium compounds (see chrome-based chemicals)
  • Formulation (mixing) of preparations and/or re-packaging (excluding alloys)
  • Manufacture of plastics products, such as compounding and conversion
  • Uses in industry: Use of substances as such or in preparations

Final Words!

Sodium Dichromate emerges as a chemical powerhouse, and Desicca Chemicals Pvt Ltd stands as the vanguard in its manufacturer and supplier in India. Our commitment to quality, affordability, and innovation sets us apart in the industry. Whether you need this chemical for corrosion inhibition, dye production, wood preservation, metal finishing, or laboratory applications, we are your reliable partner.

Contact us at or if you are interested in sodium dichromate buy or more information about our services. Alternatively, visit our website today to explore our comprehensive range of products and discover the unparalleled quality we offer.