Ammonium ferric citrate
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Ammonium ferric citrate has the formula {y}. The iron in this compound is trivalent. All three carboxyl groups and the central hydroxyl group of citric acid are deprotonated. A distinguishing feature
Ammonium Ferric Citrate
Cyanotype
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The cyanotype is a slow-reacting, photographic printing formulation sensitive to a limited near-ultraviolet and blue light spectrum, the range of 300 nm to 400 nm, known as UVA radiation. It produces
Ammonium ferric citrate
…As a reducing agent of metal salts of low activity like gold and silver With potassium ferricyanide as part of the cyanotype photographic process Used in Kligler's Iron Agar (KIA) test to identify enterobacteriaceae bacteria by observing their metabolism of different sugars…
A cyanotype of algae by 19th century botanist Anna Atkins
Sir John Herschel (1842) Experimental cyanotype of an unidentified engraving of a lady with a harp, Museum of the History of Science
Architectural drawing blueprint, Canada, 1936
Cyanotype postcard, Racine, Wis., c. 1910