Science student12 Posted January 19, 2020 Share Posted January 19, 2020 Hello, I am a student attempting to do photography with Iron Salts and I have a problem. What exactly do these instructions mean? Mix 10 parts of ferrous oxalate (25% aqueous solution), 7 parts of concentrated ammonia solution, and 20 parts of a saturated solution of oxalic acid to produce a photosensitive iron complex. Prepare separately a 25% solution of potassium ferricyanide. Thanks. Link to comment Share on other sites More sharing options...
John Cuthber Posted January 19, 2020 Share Posted January 19, 2020 You need a whole bunch of solutions (all dissolved in water) 25% Ferrous oxalate Concentrated ammonia (not specified, but probably 25% w/v or thereabouts. A saturated solution of oxalic acid. Unfortunately, ferrous oxalate isn't very soluble in water. So the first of those is impossible. So this is going nowhere. Link to comment Share on other sites More sharing options...
StringJunky Posted January 19, 2020 Share Posted January 19, 2020 4 hours ago, Science student12 said: Hello, I am a student attempting to do photography with Iron Salts and I have a problem. What exactly do these instructions mean? Mix 10 parts of ferrous oxalate (25% aqueous solution), 7 parts of concentrated ammonia solution, and 20 parts of a saturated solution of oxalic acid to produce a photosensitive iron complex. Prepare separately a 25% solution of potassium ferricyanide. Thanks. Here's a process with iron salts and how-to: http://www.alternativephotography.com/photography-with-iron-iii-salt/ Link to comment Share on other sites More sharing options...
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