| 摘要 |
<p>A process for stabilizing aqueous solutions of aryl hydrazides is described. These solutions may be made by the addition of a stabilizing amount of ascorbic acid, isoascorbic acid, erythorbic acid, tartaric acid, citric acid, glucose and a cyclodextrin, etc., or mixtures, for example. When aqueous solutions of aryl hydrazides containing these stabilizers/antioxidants are prepared, the solution will have a shelf life of up to 30 days compared to 1-3 hours of solutions without the stabilizer/antioxidant. The stabilized aryl hydrazide is useful in photographic silver halide emulsions, etc.</p> |
