Technical Bulletin



 Short and Long-Term Rust Protection



NOVCHEM™ RPR  provides full corrosion protection for ferrous parts by immersion or immersion with ultrasonics. It is used in the rinse water in cleaning with or without ultrasonics to protect the steel parts and further protect during hot air drying. Novchem RPR provides a dry protecting film. The inhibitor film continues to protect cleaned ferrous parts for several months in indoors environment. It is ideal for protecting components for in between operations, for shelving and during shipping around the globe.


NOVCHEM™ RPR is safe on all rustable steels, stainless steel, iron, plastics, and elastomers when used as directed.

Physical Data*

Flash Point: Non-Flammable

Specific Gravity: 1.03 +/- 0.01

pH: 5% solution = 10.6 +/- 0.4                                                       

Solubility in Water: Soluble       


Recommended Usage

NOVCHEM™ RPR is typically used at dilution of 2-3 % by volume in pure water in the second water rinse step of an ultrasonic cleaning or non-ultrasonic application. A higher concentration of 8- 10 % is recommended for long term storage or shipping abroad. Normal operating temperatures:  95-140F (35- 60C ).


NOVCHEM™ RPR is available in cases f 4x1 gallons, 5 gallons and in 55 gallon containers.


Dispose of in accordance with Federal, State and Local Government regulations.

Safety Precautions

See Material Safety Data Sheet.


Avoid freezing conditions

Disclaimer: All technical information and the product herein are warranted to conform to the product published specifications. The accuracy or completeness thereof is not guaranteed and is made without representation or warranty. They are presented for the intended buyers having necessary industrial skill and knowledge. Buyers and Users should do their own diligence investigation and verifications. Product discussed is sold without warranty, expressed or implied, in law or fact and upon the condition that purchasers make their own tests to determine the suitability of NovChem 57 to their particular purpose or circumstances. Ultrasonic Apps LLC disclaims all other warranties including the implied warranty of merchantability and fitness for any particular purpose in connection with use of its products and shall not be liable for any injury, loss or damage direct or consequential, arising out of use or the inability to use NovChem 57 product.




Novchem Technology  PO Box 84632 Pearland, TX 77584
Phone: 713-575-8782 / 713 575 5459

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