Sensei Posted July 18, 2015 Share Posted July 18, 2015 Hello! What are known transparent (in visible spectrum) Iron compounds.. ? Best Regards! Link to comment Share on other sites More sharing options...
John Cuthber Posted July 18, 2015 Share Posted July 18, 2015 I doubt there are any fully transparent ones. Something like this https://en.wikipedia.org/wiki/Iron(II)_sulfate#/media/File:Iron(II)-sulfate-heptahydrate-sample.jpg or this https://en.wikipedia.org/wiki/Iron(III)_fluoride is probably as good as it gets Why do you ask? Link to comment Share on other sites More sharing options...
Sensei Posted July 18, 2015 Author Share Posted July 18, 2015 (edited) Why do you ask? Two weeks ago, I took initial Iron compound, and put approximately equal amount of it to 10+ test tubes. With various 2nd chemical compounds. To quickly check them all at once. Part of them visible on this photo: Couple days ago I noticed 1st from the left is completely transparent: It used to look like this control sample two weeks ago: The last time I looked at it week ago, there was still tiny tiny amount of initial Iron compound (it was disappearing with time) on the bottom and slightly yellow color of solution. Now it's practically transparent like pure water. Edited July 18, 2015 by Sensei Link to comment Share on other sites More sharing options...
Enthalpy Posted July 20, 2015 Share Posted July 20, 2015 To discolour (or remove?) FeCl3 stains (from etching printed circuits), fluoride salts are used, or with fewer drawbacks, oxalic acid. Sound a bit like what you describe, but what is the process? Link to comment Share on other sites More sharing options...
John Cuthber Posted July 21, 2015 Share Posted July 21, 2015 Dilute solutions of Fe(++) in water are only very slightly coloured. The Fe(+++) complex with fluoride is also very pale. Link to comment Share on other sites More sharing options...
Enthalpy Posted August 3, 2015 Share Posted August 3, 2015 So removing stains would just mean dilute them with the proper liquid? Link to comment Share on other sites More sharing options...
John Cuthber Posted August 3, 2015 Share Posted August 3, 2015 So removing stains would just mean dilute them with the proper liquid? Not really. If they are a stain they are (almost certainly) a solid so you need to dissolve them. Link to comment Share on other sites More sharing options...
Pyrine Posted September 11, 2016 Share Posted September 11, 2016 Dunno if it fits the description or what you're looking for exactly, but there are quite a few gemstones that are transparent and even clear as quartz that contain iron as part of their overall chemical compounds. Phosphophyllite is a mineral with a hardness of 4 out of 10 on the Mohs scale of mineral hardness. These Monoclinicly structured gems are made of hydrated zinc phosphate, their full chemical compound being Zn2(Fe,Mn)(PO4)2.4H2O. - See more at: http://gem5.com/stone/88/phosphophyllite/#sthash.c6rVabih.dpuf Link to comment Share on other sites More sharing options...
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