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Safety of removing Rust Stains with Ammonium Bifluoride

We use ammonium bifluoride with citric acid ⇦ on eBay or Amazon [affil link] or oxalic acid mixed in water to make rust stains invisible on carpets and fabric. Is this a safe use?

Jeff pendergrass
chemical manufacturer - Milford, Ohio, USA
May 20, 2010

Hi, Jeff. There is probably no such concept as "safe / not safe"; it's all relative and highly dependent upon the specific situation. But my personal opinion would be to not use any fluoride salts if there are equally functional and equally practical alternatives.

Regards,

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
Ted is available for instant help
or longer-term assistance.
May 21, 2010

Some non chemical educated person will be virtually guaranteed to be injured. Others will try it on cotton or wool carpet and ruin the long term carpet.

James Watts
- Navarre, Florida
May 21, 2010

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