Post #535704 by Spaceboy on Fri, Jun 11, 2010 9:39 PM

I think the Internet is bringing about the new Dark Ages.

I was curious about this so I looked it up on the company's web site:
http://www.jelmar.com/faq.htm

What surfaces should I not use CLR on?
DO not use CLR on natural stone or marble, terrazzo, colored grout, painted or metallic glazed surfaces, plastic laminates, Formica, aluminum, steam irons, leaded crystal, refinished tubs or any damaged or cracked surface. CLR may etch older sinks, tubs and tiles. CLR is corrosive. Avoid contact with wood, clothing, wallpaper and carpeting. Some laminated surfaces (counter tops) are coated with a synthetic surface which may be affected by rust removers; clean spills immediately.

The MSDS on their web site says this:
http://www.jelmar.com/MSDS.htm
Components:
Water, Lactic Acid (OSHA Hazard), Gluconic Acid, Lauryldimethyl Hydroxysulaine, and Propylene Glycol Normal Butyl Ether (OSHA Hazard)

So, CLR actually has the potential to do some damage to your tiki mugs, so maybe it might not be the best choice.

If it's really bad rust and not some other stain, you might want to try Coke or Pepsi first. Naval Jelly rust remover contains the same ingredient, but more concentrated.

http://en.wikipedia.org/wiki/Phosphoric_acid