Importance

Loading Importance Indicators...

Abstract

Methods are disclosed in which first and second reactant salts and a complexing agent are added to a non-aqueous reaction solvent in which the complexing agent is soluble. The complexing agent is a crown ether or other cyclic or acyclic polydentate chelating agent that, in the reaction solvent, forms chelation complexes with at least one of the reactant salts. The reactant salts, which are substantially soluble and reactive with each other in water to form a first crystallite of silver halide, are present in the reaction solvent in relative amounts that are sufficient to form a desired amount of the silver halide in the reaction solvent. Reaction of the first and second reactant salts in the reaction solvent forms a second crystallite precipitate comprising crystals of silver halide having a different habit or morphology from silver halide crystals in the first crystallite that would otherwise be formable in water by reaction of similar amounts of the first and second reactant salts.

Loading the Abstract Image...

First Claim