Photographers' Formulary Pyrogallol is a highly pure and concentrated form of this chemical that has been specifically designed for use in photographic processes. It comes in a convenient 30g container and is available for purchase at B&H Photo.
One of the most common uses of Pyrogallol in photography is as a developing agent for black and white film. It is a highly reactive reducing agent that rapidly converts silver ions to metallic silver, resulting in the formation of the negative image on the film. Its effectiveness as a developing agent is due to its ability to penetrate the emulsion layer and reach the silver ions embedded within. In comparison to other developing agents such as hydroquinone, Pyrogallol is much faster and produces sharper images.
Pyrogallol is also commonly used as an accelerator in the development of color photographic paper. It aids in the formation of the dyes that make up the color image on the paper. Additionally, it is used in the production of toners, which are used to add color to black and white prints.
Despite its various applications in photography, Pyrogallol is a highly hazardous substance that can pose significant health risks if not handled properly. It is a skin irritant and can cause severe burns when in contact with the skin in its concentrated form. Inhalation of the fumes can also cause respiratory problems and can be fatal in high concentrations.
In conclusion, Pyrogallol is a highly reactive and versatile chemical that has found use in various photographic processes. Photographers' Formulary Pyrogallol is a highly concentrated and pure form of this chemical that is specifically designed for photographic use. However, it is essential to handle it with extreme caution and follow all safety procedures to avoid severe health risks.