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Michael Hartley
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 Posted: Tue Jul 29, 2003 10:21 am Post subject: rust stains... |
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Is there any easy way, using household chemicals, to remove rust
stains from a tile floor?
Yours, Mike H... |
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Frank Martin
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| Posted: Tue Jul 29, 2003 12:33 pm Post subject: Re: rust stains... |
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Oxalic acid is the traditional method. Apply as a concentrated solution and
rinse away afterwards.
"Michael Hartley" <policymodel@hotmail.com> wrote in message
news:cfcb68e.0307282121.7fdc488d@posting.google.com...
[quote]Is there any easy way, using household chemicals, to remove rust
stains from a tile floor?
Yours, Mike H...[/quote] |
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Larry Smith
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| Posted: Tue Jul 29, 2003 1:11 pm Post subject: Re: rust stains... |
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"Michael Hartley" <policymodel@hotmail.com> wrote in message
news:cfcb68e.0307282121.7fdc488d@posting.google.com
[quote]Is there any easy way, using household chemicals, to remove rust
stains from a tile floor?
Yours, Mike H...
[/quote]
- Iron stains can sometimes be rather difficult to remove, and other
times
deceptively simple.
In Brasil, we filtered the local tap water through a ceramic thimble
before hypochlorinating it. The municipality used gobs of iron chloride
as a coagulant, and after filtering 20 liters of water, the thimble
would
be coated with a quarter inch of dunglike goo. It was pretty tough
to remove, until our domestic employee showed us how to scrub it with
a handful of sugar. Came clean easily.
Other types of stains are more difficult and may require chelating
agents
or acids to mobilize them.
Dilute hydrochloric acid ('muriatic' at the hardware store, diluted in
water), phosphoric (Naval Jelly, perhaps) , or oxalic acids can be
tried.
Tile floors are often brightened by an acid wash after they are laid,
but
strong acids and long exposure intervals can also damage the tiles.
Start
dilute, use elbow grease, and be careful. Acids (dilute) of many types
can
be handled safely by the nonprofessional, but be sure to stay within the
instructions and safety guidelines.
Last, some iron stains are almost impossible to remove. Ran across this
with iron-stained Pyrex sample bottles, normally used to take sea water
samples.
Aqua regia, upon long exposure, gave some cleaning. Never spent the
time
and money to identify the iron matrix involved, and can only speculate.
--
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Marvin Margoshes
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| Posted: Tue Jul 29, 2003 7:29 pm Post subject: Re: rust stains... |
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"Michael Hartley" <policymodel@hotmail.com> wrote in message
news:cfcb68e.0307282121.7fdc488d@posting.google.com...
[quote]Is there any easy way, using household chemicals, to remove rust
stains from a tile floor?
Yours, Mike H...
[/quote]
You can buy rust removers from hardware stores and big-box stores like Home
Depot. They have stronger chemicals than you are likely to have around the
house. You must wear heavy rubber gloves, and goggles are a good idea -
really a must-have. The remover may damage the surface glaze of the tiles. |
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Frank Martin
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| Posted: Wed Jul 30, 2003 11:10 am Post subject: Re: rust stains... |
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I think the Oxalic sequesters the iron, and the citric in lemon juice does
too. Once I cleaned a bath with severe rust stains (from a leaking tap) and
the oxalic worked well, though several applications were required.
Something else I>ve tried is sulfamic acid which is the main component in
stainless-steel-pots cleaner.
"Dr. Rev. Chuck, M.D. P.A." <cdub@_REMOVETHIS_erols.com> wrote in message
news:3F274748.15C2@_REMOVETHIS_erols.com...
[quote]Lemon juice or vinegar are worth trying.
Frank Martin wrote:
Oxalic acid is the traditional method. Apply as a concentrated solution
and
rinse away afterwards.
"Michael Hartley" <policymodel@hotmail.com> wrote in message
news:cfcb68e.0307282121.7fdc488d@posting.google.com..
Is there any easy way, using household chemicals, to remove rust
stains from a tile floor?
Yours, Mike H...[/quote] |
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Michael Hartley
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| Posted: Fri Aug 01, 2003 9:27 am Post subject: Re: rust stains... |
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So basically any acid will do, but some are better than others...
What is the reaction here?
Fe2O3 + 6H+ -> 3H20 + 2Fe3+ ???
Yours, Mike H... |
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Joćo Antonio
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| Posted: Sat Aug 02, 2003 12:41 am Post subject: Re: rust stains... |
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More properly
Fe(OH)3 + 3 HX -> 3 H2O + FeX3
Note that the Fe(III) cation would be bonded to the acid>s anionic X, which
may
not be univalent as in the equation above.
Depending upon the nature of X, the complex forming can be more important
(i.e. contribute deeper to the free energy) than OH- neutralisation, that>s
why
oxalate and citrate counter ions work better than Cl-.
"Michael Hartley" <policymodel@hotmail.com> escreveu na mensagem
news:cfcb68e.0307312027.5133dfd4@posting.google.com...
[quote]So basically any acid will do, but some are better than others...
What is the reaction here?
Fe2O3 + 6H+ -> 3H20 + 2Fe3+ ???
Yours, Mike H...
[/quote]
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