Freon 113 is used as a solvent in the production of which fingerprint processing method?

Ninhydrin is a chemical compound that reacts with amino acids found in perspiration, making it effective for developing latent fingerprints on porous surfaces. In the production of ninhydrin-based fingerprint processing, Freon 113 serves as a solvent to dissolve ninhydrin for easy application. The use of Freon 113 helps facilitate a uniform distribution of the ninhydrin across the surface being processed, which is crucial for obtaining clear and visible fingerprints.

Freon 113's properties as a solvent contribute to the improved adherence and reaction of ninhydrin with the amino acids in the fingerprint residue, enhancing the visibility of the developed prints. This method is particularly useful when dealing with porous substrates, such as paper or cardboard, where traditional methods might not yield satisfactory results.

Other methods mentioned, like superglue and DFO (1,8-diazafluoren-9-one), involve different chemicals and solvents that do not include Freon 113. For example, superglue relies on cyanoacrylate ester reactions, while DFO is used as a fluorescent reagent that operates under unique conditions, thereby ruling them out as options in relation to the use of Freon 113 as a solvent. Magnetic powder is also