Passivation Formulation for Stainless Steel with Citrajet (Citranox)

Q. How do you generate a 30% concentration of Citrajet for stainless steel passivation?

A. Both acidic detergents in the Alconox, Inc. detergent portfolio can be used to passivate.  These are Citranox® Liquid Acid Cleaner and Detergent or Citrajet® Low-Foam Liquid Acid Cleaner/Rinse.

To make a 30% solution use 300 ml of Citrajet with 700 ml of water to make up a liter, or use 3 gallons of Citrajet with 7 gallons of water to make 10 gallons of 30% solution.

Passivate by immersing the stainless steel in a 30% solution (300mL/L) of Citrajet at any of the following combination of time and temperature: 70-120 deg F (21-49 deg C)/20 min, 120-140 deg F (49-60 deg C)/10 min, or 140-160 deg F (60-71 deg C)/4 minutes. Rinse thoroughly immediately after passivation.  Citranox detergent may similarly be used.

To request these, or any Alconox, Inc. detergents for free, please complete the questionnaire at Get Sample.  For more information about any one of our Alconox, Inc. detergents, consult the technical bulletin for each product. Or click here to access each of our detergent’s  Safety Data Sheets.

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Contact us any time: cleaning@alconox.com