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Science student12

Photography with Iron Salts

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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.

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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.

 


 

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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/

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