目的 合成一种新的无氰金盐,并对其理化性质进行研究。 方法 以分析纯的巯基乙酸、硫脲、盐酸、王水和金锭为原料,合成巯基乙酸亚金。 对产物进行红外分析和金含量分析,研究热稳定性,测试溶解性能。 结果 产物分子式为 AuSCH₂COOH,且该化合物在常温下化学性质稳定,与强碱液反应生成水溶性盐类。 结论 合成了一种无氰金化合物,性质稳定,有望用于镀金工业领域。

Objective To synthesize a new non-cyanide gold salt and to study its physico-chemical properties. Methods Using analytic grade thioglycolic acid, thiourea and hydrochloric acid, aqua regia and ingots as the raw materials , Gold( I) thioglycolate was synthesized for the first time. The product was analyzed by infrared analysis and the gold content analysis, the thermal stability was studied, and the solubility of the product was tested. Results The results showed that the product ’ s molecular formula was AuSCH₂COOH, and the chemical properties of the compound were stable at room temperature, the product was insoluble in common organic substances and acids, and could form aqueous solution by reaction with alkali liquor. Conclusion A cyanide-free gold compound was synthesized with stable nature, which is expected to be used in the gold plating industry.