A phosphate-free citric passivation concentrate and deoxidizer cleaner.

Available in 1 gallon bottles, cases of 4 (4 gallons) or 5 gallon pails.

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.

Description
Chem-Crest ProPass is a phosphate-free citric passivation concentrate and deoxidizer cleaner designed to remove surface contamination, increase corrosion resistance, and 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.

Operating Conditions
Recommended dilution is 10–20% by volume and 25% by volume for heavy descaling at temperatures of 150°–180°F.
Passivation times:

• 140°–160°F – minimum 4 minutes

• 120°–140°F – minimum 10 minutes

• 70°–120°F – minimum 20 minutes
  Contact your Crest representative for product-line-specific recommendations. Recommended rinsing water temperature: 100–150°F.

Substrate Compatibility
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 an appropriate rust inhibitor.

Availability
Chem-Crest ProPass is available in cases of (4) x 1-gallon plastic bottles, 5-gallon pails, and 55-gallon containers.

Specifications

Physical Data
Flash Point: None
Specific Gravity: 1.05
pH: 2% solution = 2.6 ± 0.5
Solubility in Water: Complete
Volatiles: N/A
(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. No products in this concentrate are regulated under SARA Title III, Section 313.

Safety Precautions
See Safety Data Sheet

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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.