A Formaldehyde is used in the textile industry for dyeing, as dye fixing agents and for achieving flame retardance properties.
Q Why is the fixing agent used?
A Its purpose is to remove or clear all unexposed and undeveloped silver halide crystals from the film emulsion allowing light to pass through the film image and permitting viewing of the radiographic image on a view box.
Q What is a fixing agent?
A Definitions of fixing agent. A chemical compound that sets or fixes something (as a dye or a photographic image) synonyms: fixer. Types: fixative. A compound (such as ethanol or formaldehyde) that fixes tissues and cells for microscopic study.