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Thread: Copper Tubing Question

  1. #1
    Join Date
    Jul 2016
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    Copper Tubing Question

    I just got a copper tube and am trying to coil it. So i added table salt in it so that it wouldn't bend inwards. After i made it, i poured water in the tube to get the table salt diluted and flashed out. The issue is a portion of the salt has probably been stuck half way through the tube and as a result i can't remove it by simply adding water. My question now is, could it be that the salt actually reacted with the copper? I will connect a hose to the tube to forcefully push the salt out but i fear that the inside of the tubing might have been altered and therefore unfit to perform distillations.

  2. #2
    Join Date
    Oct 2016
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    Have you tried using hot boiling water to flush out and dissolve the salt? Or a gun barrel brush? What about alcohol to dissolve the salt?

  3. #3
    Join Date
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    Quote Originally Posted by Schmuldvich View Post
    Have you tried using hot boiling water to flush out and dissolve the salt? Or a gun barrel brush? What about alcohol to dissolve the salt?
    Or also air pressure: hook one end of the copper tubing to an air pump (either electric or manual) and just force the salt + water out.

  4. #4
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    Schmuldvich, i did try adding boiling water but it proved ineffective.

    JDP, i don't have any air pump that i can fit on the pipe to use effectively.

    As a test, i placed a piece of copper tubing in salt water about 3 hours ago and now that i am back i can see a salt has formed around the end of the pipe that was submerged in the water. I will get the fitting to connect the water supply to the tubing tand force the salt out tomorrow and just hope to remove all the salt within the tube.

  5. #5
    My first thought would be to submerge the copper coil in a bucket of fresh water for an hour to try and dissolve the salt.

  6. #6
    Join Date
    May 2009
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    Copper doesn't react that much with salt, as the pipe is most likely an alloy it quickly forms an oxidisation layer that stops any further reaction.

    As Axismundi suggests above, I would suggest submerging the whole pipe in hot water and move the pipe periodically, the salt will want to go into solution with the water osmotically.

    Just a thought...good luck.

    Ghislain

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