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.
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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Disclaimer: All statements, technical information, and recommendations contained herein are based on tests or other information available to us, which we believe to be reliable, but the accuracy and completeness thereof is not guaranteed and are made without representation or warranty. They are presented for your own investigation and verification. Products discussed are sold without warranty, expressed or implied, in law or fact and upon the condition that the purchasers make their own tests to determine the suitability of such products to their particular purpose. We shall not be liable for any injury, loss, or damage direct or consequential, arising out of the use or the inability to use the product. It is the user's obligation and responsibility to determine that any use of the product or the information may infringe on patent rights.