PHOTOCHEM Potassium Oxalate 1 kg (05510-1000PP)

Potassium oxalate (chemical formula: K₂C₂O₄) is a white, water-soluble salt derived from oxalic acid. It is commonly used in chemistry as a reducing agent and complexing agent due to its ability to bind with metal ions.

In photography, potassium oxalate is primarily used as a developing agent in platinum and palladium printing, which are alternative photographic processes prized for their exceptional tonal range and archival stability. It helps develop the image by reducing the metal salts (platinum or palladium) to their metallic form, revealing the final image.

Potassium oxalate is preferred in these processes because it provides warm image tones and works effectively with the delicate chemistry of noble metal prints. Its role is essential in achieving the smooth gradation and rich blacks that characterise high-quality platinum/palladium prints.

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