What is Flash Rust, Rust Back, and Rust Bloom?

1. Lydia M. Frenzel, Ph.D.
   I read an article you wrote named Chemical Rinse Aids part four was written for cleaner times magazine in 2004. In the article you refereed to the study “Evaluation of Chemical Rinse Agent on Steels to an Atmospheric Marine Environment.” Unfortunately, you expressed disappointment that you did not know the trade names of the various Chemical Rinse Aids tested CRA-1 CRA-2 CRA-3 CRA-4. Do you know now what the trade are since it has been 10 years since the article was written?
   Best, Adam Prince

   1. Comparison of Rinse Aids and Corrosion Reducers- Series of Papers in Cleaner Times- 2004- by Lydia Frenzel
      Adam-This reply will likely disappoint you. I see that you have a metal working shop and would like to know about specific products.
      I am copying my response to CleanerTimes ; they like to know that people read and keep their stuff.
      I do know the trade names of the 4 chemical rinse aids as they were disclosed to me in private correspondence. The authors, myself, and other people were discussing the results of this study along with the ONR study in the other Cleaner Times articles.
      However, I did not, with the exception of one CRA based on its pH, correlate the products with each designation. Once you have the product names, it is fairly easy to check the pH (for CRA 1 and CRA 2), check the phosphate level (for CRA3), and check the ammonium level (for CRA 4)- likely identified on the label as an amine or ammonium salt.
      The NASA study was published sanitized without trade names. This is frequently done so that the manufacturers can’t either use the results for marketing –if the results are good- or complain that they were treated unfairly- if the results are less than great. When governmental agencies do comparison testing, the results are not normally making a public recommendation. If the manufacturer knows that, for example, his product is CRA3, he could contact other agencies, cite the study, and ask his contacts to request product disclosure from one of the authors. In this case, I know of one manufacturer that was severely disappointed in the comparison testing.
      “Evaluation of Chemical Rinse Agent on Steels to an Atmospheric Marine Environment”, J.J. Curran, J.P. Curran, L. MacDowell, NASA, Tri-Service Corrosion Conference, Nov. 2003, Las Vegas, NV
      In the earlier articles, the NACE corrosion2003 paper 03215 by Lambrakos, Tram, and Ttzaskoma-Paulette disclose their additives. That is a very good starting point to compare the properties those additives with the rinse aids in the Curran and MacDowell NASA paper.

2. Lydia M. Frenzel, Ph.D.
   I read an article you wrote named Chemical Rinse Aids part four. It was written for cleaner times magazine in 2004. In the article you refereed to the study “Evaluation of Chemical Rinse Agent on Steels to an Atmospheric Marine Environment.” Unfortunately, you expressed disappointment that you did not know the trade names of the various Chemical Rinse Aids tested CRA-1 CRA-2 CRA-3 CRA-4. Do you now know what the trade names are since it has been 10 years since the article was written?
   Best,
   Adam Prince

3. Could not get the links to work. also, directly typing in http://WWW.FLASHRUST.ORG also would not work.

   1. Thanks for writing. You are right- the flashrust.org site is down. I will get IT to reset. Our site(s) are popular with hackers trying to “attack.” We have the site(s) lose the database connection rather than let someone in. Normally it will reset itself, but that didn’t seem to happen today.
      Regards,
      Lydia

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