Silver nitrate also known as lunar caustic is a soluble chemical compound with chemical formula AgNO3. This compound is a versatile precursor to many other silver compounds, such as those used in photography.
Silver nitrate
A chemical combination of silver and nitric acid. It is used in intensifiers, physical developers and photographic emulsions manufacture.
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Silver Nitrate
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silver nitrate
a light sensitive compound that forms the base of all other silver compounds in photographic sensitizers.
1800: Thomas Wedgwood makes "sun pictures" by placing opaque objects on leather treated with silver nitrate; resulting images deteriorated rapidly, however, if displayed under light stronger than from candles.
The precipitate produced by dissolving elemental (metallic) silver in nitric acid produces silver nitrate (AGNO3). Silver nitrate can undergo further reactions to produce halides which are even more photo-sensitive.
To make a calotype, plain sheets of writing paper are coated with a solution of silver nitrate, dried, then dipped in potassium iodide to form silver iodide.
Paper is soaked with weak salt solution, then silver nitrate is brushed on, and the result is silver chloride. Finished prints have a beautiful delicacy in the lighter tones, but slightly lack in detail overall.
Dole describes the process, 'What you do is set up the camera, prepare a plate by flowing collodian onto the plate [which is an art form in itself], sensitize in a bath of silver nitrate, put the plate into a wooden holder, ...
Calotype process
Invented by W.H. Fox Talbot in 1839. Paper was coated with silver iodide and a solution of silver nitrate and gallic acid. Following exposure the paper was developed in a silver nitrate solution.
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-Calotype process - first negative/positive process, invented by W.H. Fox Talbot in 1839. Paper was coated with silver iodide and a solution of silver nitrate and gallic acid.
In the early 1800's Angelo Sala observed that when silver nitrate powder is kept in the sun for long, it turns black. ...
Cyanotype is an early photographic process using potassium ferricyanide instead of silver nitrate. (Blueprints on Fabric uses potassium ferricyanide and ferric sal.t) This is what causes the blue color instead of the grey of silver.
 See also: Nitrate, Silver, Photograph, Image, Light
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