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</head><body>[Comcast changed its mail interface so this may not work at all. Here's hoping; I think gmail sucks but Comcast really sucks worse now so maybe I'll change.]<br><br>Ethylene Glycol Monobutyl Ether is a surfactant (one of the butyl cellosolve types) whose purpose is to penetrate oils from fingerprints and such on the part. Chromium trioxide is an oxidiser; not certain why it is in there, but it may also be for oil lifting/penetration.<br><br>Donald.<br><br><blockquote type="cite">
On October 1, 2017 at 7:38 PM Jim Stone <1789alpine@gmail.com> wrote:<br><br>Interesting. Glad it worked. It is always good to have additional options! I was curious about this vs. the Prep and Etch that I recommended and looked up both safety data sheets. P&E is just Phosphoric Acid, listed at 35-45% concentration. Must for Rust also contains Phosphoric Acid (20%), along with Ethylene Glycol Monobutyl Ether and Chromium Trioxide (1% each). Does anyone here know what the two other chemicals do?<div class=""><br class=""></div><div class="">Jim</div><div class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Sep 30, 2017, at 10:12 AM, john niolon <<a href="mailto:jniolon@att.net" class="">jniolon@att.net</a>> wrote:</div><br class="Apple-interchange-newline"><div class="">
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<div class="">Found a product from “Krud Kutter” called ‘a must for rust’
About a 8 oz bottle for about 6 bucks</div>
<div class="">dumped it into a plastic container and loaded the carriage bolts,nuts and
washers... left it in solution for</div>
<div class="">about 2 hours then took them out.... clean as a whistle. Rinsed with
water (per instructions) and dried, then </div>
<div class="">coated with wd-40... Looked like new. </div>
<div class=""> </div>
<div class="">+1 for Krud Kutter... a good inexpensive solution... also comes in spray
bottle and gallon containers</div>
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<div class="">thanks for all the suggestions, guys</div>
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<div class="">john</div></div></div></div>
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