akcapr Posted July 2, 2005 Share Posted July 2, 2005 theres a big rust stain on my carpet, is there a chemical that could oxidize the iron oxide to a colorless form or something?- without hurting the the color of the structure of the carpet itself Link to comment Share on other sites More sharing options...
YT2095 Posted July 2, 2005 Share Posted July 2, 2005 if it`s a synthetic carpet, then use very dilute sulphuric acid (no more than 5%) then wash it out a few times with strong sodium bicarbonate soln. Link to comment Share on other sites More sharing options...
akcapr Posted July 3, 2005 Author Share Posted July 3, 2005 i got it out with some citric actually. thx 4 the help tho Link to comment Share on other sites More sharing options...
EL Posted July 3, 2005 Share Posted July 3, 2005 So you found out about the lemon juice trick, ha! Link to comment Share on other sites More sharing options...
Primarygun Posted July 3, 2005 Share Posted July 3, 2005 oxidize the iron oxide Normally, neutralization should be more easily than a reduction. Link to comment Share on other sites More sharing options...
EL Posted July 3, 2005 Share Posted July 3, 2005 Not neutralization, it is solubilization by forming soluble complexes. Link to comment Share on other sites More sharing options...
H2SO4 Posted July 3, 2005 Share Posted July 3, 2005 i have a shirt that is stained horribly with red iron oxide. So just apply lemon juice and let it sit and wash it out? Link to comment Share on other sites More sharing options...
woelen Posted July 3, 2005 Share Posted July 3, 2005 i have a shirt that is stained horribly with red iron oxide. So just apply lemon juice and let it sit and wash it out? A really good way to remove iron oxide/rust stains is the use of oxalic acid, which is a very strong complex-former with iron (III) ions, while otherwise being _relatively_ mild. First try with citric acid though, because oxalic acid is quite toxic. If that does not work, then try oxalic acid. Link to comment Share on other sites More sharing options...
EL Posted July 3, 2005 Share Posted July 3, 2005 woelen! That is my man. Link to comment Share on other sites More sharing options...
akcapr Posted July 3, 2005 Author Share Posted July 3, 2005 ya oxalic acid works pretty good Link to comment Share on other sites More sharing options...
EL Posted July 3, 2005 Share Posted July 3, 2005 ya oxalic acid works pretty good Indeed, but woelen is still my man. If it was wood stained with ferric oxide, then you are my man too. It is a shirt, that is why citrate complex should harmlessly do. Link to comment Share on other sites More sharing options...
akcapr Posted July 3, 2005 Author Share Posted July 3, 2005 also, i was jw, wat is the definiton of a complex? Link to comment Share on other sites More sharing options...
EL Posted July 3, 2005 Share Posted July 3, 2005 Any combination of a cation associated with molecules or anions containing unshared pairs of electrons. The interaction can range from purely electrostatic to that approaching covalent character. Metal Cation - The central metal atom in the complex Ligand(s) – the anions or molecules involved in forming the complex with the central metal cation. Ligand Atom – the particular atom involved in the interaction with the central metal atom. Link to comment Share on other sites More sharing options...
Primarygun Posted July 3, 2005 Share Posted July 3, 2005 Metal Cation - The central metal atom in the complex Just like zincate? May I know what the product is when the rust reacts with ethanedioic acid? Link to comment Share on other sites More sharing options...
EL Posted July 4, 2005 Share Posted July 4, 2005 Just like zincate?May I know what the product is when the rust reacts with ethanedioic acid? It is extremely difficult to predict the product without being a much more controlled reaction. You may have anything from ferric oxalate hydrate to oxalato ferrum hydrate complex. The colour ranges from yellow to green, and even polymerization is evident. A much better defined complex double-salt is ferric ammonium oxalate, due to the masking of one acidic end of oxalic acid by the ammonium radical. High polymers of ferric oxalate crystals can be found in kidney stones. The most soluble form of the salt is a 1:2 ratio of ferric to oxalic, which forms when the acid is very diluted. This solubility is retained at 1:3 ratio, but and fractional ratios else than those are undefined. Link to comment Share on other sites More sharing options...
spamonkey8 Posted July 4, 2005 Share Posted July 4, 2005 Here, this works great: Dump some carbon powder onto the stain, and heat it all to a few thousand degrees and the carbon will reduce the rust to iron, then you can put out the smoldering embers your house has become and bask in the glow of a beautifullt de-rusted patch of melted carpet! Link to comment Share on other sites More sharing options...
EL Posted July 4, 2005 Share Posted July 4, 2005 This reminds me of the one sin sinner lighting a candle and the two sin sinner lighting two. When Bush J. went for confession, the priest was worried about burning down the church. Link to comment Share on other sites More sharing options...
rthmjohn Posted July 9, 2005 Share Posted July 9, 2005 Any combination of a cation associated with molecules or anions containing unshared pairs of electrons. Anything to do with Lewis acids and bases? Link to comment Share on other sites More sharing options...
EL Posted July 9, 2005 Share Posted July 9, 2005 Yes. Link to comment Share on other sites More sharing options...
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