| prov:value
| - Among the materials found suitable as solvents or complexing/solubilizing agents for the preparation the silver-containing solutions are alcohols, including glycols, such asethylene glycol (U.S. Pat. Nos. 2,825,701 to Endler et al and 3,563,914 to Wattimena), ammonia (U.S. Pat. No. 2,463,228 to West et al), amines and aqueous mixtures of amines (U.S. Pat. Nos. 2,459,896 to Schwartz, 3,563,914 to W
|