A phosphate-free citric passivation concentrate and deoxidizer cleaner.
(case of four x 1-gallon bottles)
Designed to remove surface contamination, increase corrosion resistance, remove discoloration, tarnishes, scales and oxides. It is an alternative for nitric acid passivation and passes citric acid passivation evaluations such as ASTM A967.
Chem-Crest ProPass is a phosphate-free citric passivation concentrate and deoxidizer cleaner designed to remove surface contamination, increase corrosion resistance, remove discoloration, tarnishes, scales and oxides. It is an alternative for nitric acid passivation and passes citric acid passivation evaluations such as ASTM A967. Contact a Crest representative for further details.
Typical Contaminants Removed
Chem-Crest ProPass removes light oils, light scales and oxides, and general contaminants from the surfaces of parts. To extend the life of the bath, it is recommended to ultrasonically clean before passivation.
Recommended dilution is 10-20% by volume and 25% by volume for heavy descaling at temperatures of 150°-180°F. Passivation temperatures: 140°-160°F – 4minutes minimum. Passivation temperatures: 120°-140°F – 10minutes minimum. Passivation temperatures: 70°-120°F – 20minutes minimum. Contact your Crest representative for product-line-specific recommendations. Recommended rinsing water temperature: 100 - 150°F.
Chem-Crest ProPass is compatible with brass, bronze, copper, stainless steel, zinc and aluminum. It is safe on glass, ceramics and plastics. Ferrous surfaces (non-stainless steel) must be protected immediately after treatment with Chem-Crest ProPass with an appropriate rust inhibitor.
Chem-Crest ProPass is available in cases of (4) x 1-gallon plastic bottles, 5-gallon pails, and in 55-gallon containers.
Flash Point: None
Specific Gravity: 1.05
ph: 2% solution = 2.6- +/- 0.5
Solubility in Water: Complete
(The above are typical values and do not constitute specifications.)
Storage Conditions and Disposal Materials
Avoid freezing conditions. Dispose in accordance with Federal, State, and Local regulations and procedures. No products contained in this concentrate are regulated under SARA Title III, Section 313.
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