Additional information
| Weight | N/A |
|---|---|
| Size | 1 Gallon, 2.5 Gallon, 32 Oz Spray Bottle, 55 Gallon Drum |
Citric Acid Passivation
$24.00 – $1,785.00
Citric Acid Passivation Spray – Ready-to-Use Surface Treatment for Stainless Steel
Capital Weld Cleaners’ Citric Acid Passivation Spray is a high-performance, ready-to-use formulation designed for the chemical passivation of stainless steel surfaces. Developed for both maintenance and post-fabrication applications, this solution effectively removes free iron and surface contaminants, promoting the regeneration of the protective chromium oxide layer essential to stainless steel’s corrosion resistance.
Available in 32 oz spray bottles, 1-gallon jugs, 2.5-gallon containers, and 55-gallon drums, this versatile solution is ideal for a wide range of operations—from benchtop precision cleaning to large-scale industrial surface treatment.
Key Features & Benefits:
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Ready-to-Use Citric Acid Formula – No dilution required; formulated for direct application in both spray and immersion processes
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ASTM A967 / A380 Compliant – Meets industry standards for passivation of stainless steel when used correctly
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Non-Hazardous & Environmentally Friendly – Citric acid is on the FDA’s GRAS (Generally Recognized as Safe) list, making it ideal for use in food, beverage, pharmaceutical, and sanitary processing industries
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Selective Iron Removal – Effectively removes surface iron while preserving nickel and chromium, promoting the formation of a thicker, more corrosion-resistant oxide layer compared to nitric acid-based systems
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Safe for Operators & Workspaces – Low-toxicity chemistry offers a safer alternative to nitric acid with reduced PPE requirements and simplified waste handling
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Broad Alloy Compatibility – Passivates a wider range of stainless steel grades and mixed-alloy assemblies than traditional nitric acid-based formulations
Applications:
The Citric Acid Passivation Spray is ideal for:
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Post-weld treatment (used in combination with electrochemical weld cleaning)
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Restoring passive layers after fabrication, machining, or contamination
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Ongoing maintenance in environments with exposure to chlorides, airborne contaminants, or mechanical wear
How to Use:
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If applicable, perform weld cleaning first using a Capital Weld Cleaners weld cleaning machine to remove heat tint and oxidation.
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Spray or immerse the part to fully saturate the surface. Pay special attention to seams, crevices, and areas prone to corrosion.
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Allow the surface to remain wet for 15–30 minutes. Reapply as necessary to maintain wetness throughout the dwell time.
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Rinse thoroughly with clean water.
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Dry completely using a clean cloth or pressurized air. Ensure the surface is dry before any subsequent use, particularly in food contact applications.
Note: While this product is non-corrosive to stainless steel, it is recommended to perform a spot test on a small area prior to full application, especially on sensitive or polished finishes.
The Citric Acid Passivation Spray from Capital Weld Cleaners is a cost-effective, safe, and efficient solution for restoring and preserving the corrosion resistance of stainless steel. Whether you’re maintaining hygienic process equipment or protecting fabricated components, this spray delivers industrial-grade results with minimal risk and maximum compliance.
