OX-OUT 540-L PASSIVATING SOLUTION

No.540-L is a mixture of acids, orange in color. Scientifically formulated to form a protective film when used on Type 300 or 400 stainless steels. It will not corrode or etch the surface. May also be used on aluminum to remove the copper smut formed after acid or alkaline treatment.

WHAT IT DOES:

Essentially, passivation of stainless steel is a surface cleaning process. Eliminating surface contamination is necessary so the natural exposure to air will allow the formation of a thin, durable chromium oxide film. Additional passivation using #540L is specified to remove light surface contamination from stainless steel surfaces. That includes shop dirt, iron particles from cutting tools and machining lubricants. #540L enhances the level of chromium in the protective film which raises the corrosion resistance and protects against surface staining. CHEMCLEAN #540-L is scientifically formulated to form a protective film when used on Type 300 or 400 stainless steels. It will not corrode or etch the surface. CHEMCLEAN #540-L may also be used on aluminum to remove the copper smut formed after acid or alkaline treatment.

WHAT IT IS:

CHEMCLEAN #540-L is a mixture of acids, orange in color.

HOW TO USE IT:

• IMMERSION - Small pieces that require maximum passivation can be immersed in CHEMCLEAN #540-L for 30 minutes at room temperature. (Raising temperature shortens immersion time.) Follow with clean water rinse.
• SWABBING - A minimum degree of passivation can be generated on large pieces by sponging surfaces with #540-L for a minimum of 5 minutes. Rinse with clean water.
• POWER PAK 85 - For quick passivation of welded areas - ElectroClean with POWER PAK and OX-OUT #155 or #536 as needed. Rinse with clean water. Use an applicator handle and wiping material reserved for passivating solutions only. Apply #540-L to the area liberally with the POWER PAK on "High." Follow with clean water rinse.

CAUTION:

Strong Acid Mixture... Personnel handling and using OX-OUT #540-L should wear proper acid proof clothing and gloves. Eye protection is required. Avoid contact with skin, eyes or clothing. See Material Safety Data Sheet for hazard communication standards.