Question about phosphoric acid for the purposes of rust removal, Is full strength really better? |
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Question about phosphoric acid for the purposes of rust removal, Is full strength really better? |
bondo |
Aug 2 2006, 07:09 PM
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#1
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Practicing my perpendicular parking Group: Members Posts: 4,277 Joined: 19-April 03 From: Los Osos, CA Member No.: 587 Region Association: Central California |
Hopefully we have some chemistry experts here..
I'm using Jasco Metal Etch to dissolve rust. It's phosphoric acid of unknown strength, and some sort of soapyness so it cleans too. The instructions say to dilute it with water. I've been working with the assumption that using it at full strength will give better/faster results. Am I right or am I just wasting metal etch? (It isn't THAT expensive, about $10 a gallon) |
mihai914 |
Aug 2 2006, 07:41 PM
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#2
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Senior Member Group: Members Posts: 800 Joined: 2-March 05 From: Montreal, QC Member No.: 3,697 Region Association: None |
Could be like Isopropylic Alcohol (rubbing alcohol), if it's 99% pure it won't be a disinfectant, if you change the mix 70/30 with water then it becomes a disinfectant. The acid may need the oxygen or hydrogen from the water to react and do it's job.
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