Sodium Dichromate

 

RXSOL  

Sodium Dichromate

 

       

Item  Code: RXSOL-20-2400-025

  Application of Sodium dichromate :
• Chromium source in preparing chromium compounds
• Leather tanning and screen printing
• Electroplating
• Pyrotechnics and explosives
• Pigment preparation
• Wood Preservative
• Metal Treating and corrosion inhibitor
• Oil drilling
• Catalyst for the chromium metal production
• Photographic engraving

Note:

 10588-01-9 (Anhydrous)
7789-12-0 (Dihydrate)

Sodium Dichromate:-
After thorough cleaning, the stainless steel part is ready for immersion in a passivating acid bath. Any one of three approaches can be used--nitric acid passivation, nitric acid with sodium dichromate passivation and citric acid passivation. Which approach to use depends on the grade of stainless steel and prescribed acceptance criteria.
 

More resistant chromium-nickel grades can be passivated in a 20 percent-by-volume nitric acid bath . As indicated in the same table, less resistant stainless grades can be passivated by adding sodium dichromate to the nitric acid bath to make the solution more oxidizing and capable of forming a passive film on the surface.
 

Another option, used in place of nitric acid plus sodium dichromate, is to increase the concentration of nitric acid to 50 percent-by-volume , The sodium dichromate addition and lit : higher nitric acid concentration both reduce the chance of undesirable flash attack.

APPEARANCE : Odorless orange crystal grain
Na2Cr2O7· 2H2O : 98.0% min
SULPHATES : 0.4% max
CHLORIDES : 0.2% max

     
 

Tech Spec

 

 

Related Products: 
Nitric Acid 62 to 68%
Nitric Acid Lab Reagent
Passivation Liq. Blend with Citric Acid
Passivation Liquid RX
Passivation Method verson II
Passivation reagent 17
Passivation reagent 45
 
 
Safety Accessories: 
Gloves Disposable
Goggle

 

 

 

 

 

We cater the cleaning chemicals for the following industries

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