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金粒/金粉/纳米金粉

产品编号 G121741 | CAS号 7440-57-5 | 阿拉丁
Gold
diam. 3mm×4mm, 99.99% metals basis
组合的产品项目
货号 规格 库存 价格 数量
G121741-1g diam. 3mm×4mm, 99.99% metals basis 上海(预计3-7周)
北方(预计3-7周)
 
G121741-5g diam. 3mm×4mm, 99.99% metals basis 上海(预计3-7周)
北方(预计3-7周)
 
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属性

密度 18.8800
熔点 1064.43°C
沸点 3080°C
存贮条件 密封保存。

描述

产品介绍 金黄色有光泽金属,质柔软,富有延展性,1克金可拉成3000米金丝,可锤成只有0.00001毫米厚的半透明金箔。有良好的传热、导电性。主要氧化数+1、+3。化学性质很不活泼。在空气中不被氧化,不跟水、酸或强碱溶液反应。能溶于王水生成氯金酸HAuCl4。有氧存在时溶于氰化钾或氰化钠溶液。在空气中加热直到熔化都不发生氧化。金不溶于3种强酸,但溶于王水.氰化钾(钠)溶液。50°C与碘发生反应;60°C与氯、溴反应;100°C与氟反应。不与硫及硫化物反应。金与汞作用,可用混汞法提金。
别名 ;
应用 用作晶体管的部件、电接触合金、医药、装饰合金,大部用于货币和工艺品。在地球上分布广而稀少,多以游离态自然金形式存在,也有化合态的如碲金矿AuTe2。主要从岩脉金和冲积金矿提取。
超细金粉:主要主要用于电子工业厚膜浆料、多层陶瓷电容器内外电极材料。用于电子工业厚膜浆料、多层陶瓷电容器内外电极材料。
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安全声明(欧洲) S24/25
参考文献
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