Return to the Cleaning Tips Forum | Post a Follow-Up

 o
aluminum ruined by dishwasher detergent

Posted by earthie (My Page) on
Sun, Feb 5, 12 at 17:51

Apparently, the formulation has been changed recently on the Cascade gel pacs (with the Dawn detergent added) to remove phosphates.

That's nice and all, but now, aluminum stuff becomes discolored---dull, dark, and blotchy.

Is there anyway to restore it back to shiny aluminum color?


Follow-Up Postings:

 o
RE: aluminum ruined by dishwasher detergent

I don't beleive so.

I found this information on the Seventh Generation website:

"In general, dishwashers are not a safe environment for anodized aluminum cookware. The reason for this is both the nature of automatic dishwasher detergents and the nature of the automatic dishwasher process.

Aluminum is a very reactive metal, and the surface is rendered less active by the process of anodization. However, automatic dishwasher detergents are caustic and will attack the aluminum.

But the dishwasher environment itself is hazardous to aluminum! Many consumers improperly mix different types of metals in their automatic dishwasher. They may have silver, stainless steel, and aluminum present in a single wash. Mixing different metals in water creates a battery. One metal dissolves another while generating a flow of electrons! Unfortunately, aluminum is usually the metal that gets dissolved, resulting in pitting and discoloration of the aluminum cookware."

You can also read what Consumer Reports says about discolored aluminum at the link attached.

Here is a link that might be useful: Dishwasher detergents: New tests find a glitch


 o
RE: aluminum ruined by dishwasher detergent

I know not to put stainless and silver in together, but I've never had trouble with aluminum before now.

That's pretty cool, though that different metals create a battery.


 o
RE: aluminum ruined by dishwasher detergent

I bought an ancient aluminum colander from the flea market, wanted to sterilize it and put it in super hot water and dish liquid sitting in the sink and it turned all nasty looking? I have no idea why...it was just dish liquid.


 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!


Return to the Cleaning Tips Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Please review our Rules of Play before posting.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.


Learn more about in-text links on this page here