Product Name: Ammonium Thiosulfate (Photo Grade)
Chemical Formula: (NH4)2S2O3
Molecular Weight: Approximately 148.21 g/mol
CAS Number: 7783-18-8
 
Common Uses: Ammonium Thiosulfate (Photo Grade) is a specialized chemical compound with applications in photography and related processes:
Photography: Ammonium thiosulfate is used in photographic fixer solutions to remove unexposed silver halide from photographic emulsions, making the image permanent and preventing further exposure.
Photographic Development: It is used in photographic developers as a reducing agent to convert exposed silver halide to metallic silver during the development process.
Silver Recovery: Ammonium thiosulfate is also used in the silver recovery process to extract silver from used photographic solutions.
 
Other Information: Ammonium Thiosulfate is a salt composed of ammonium ions (NH4+) and thiosulfate ions (S2O3^2-) in a crystal lattice. It is a colorless, odorless compound that is readily soluble in water.
 
The "Photo Grade" designation indicates that this particular grade of ammonium thiosulfate is specifically purified and formulated for use in photographic applications. The purity and quality of the chemical are important factors in achieving consistent and reliable results in photography.
 
Due to its critical role in photographic processes, Ammonium Thiosulfate (Photo Grade) plays an essential role in producing high-quality images and prints.