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Author: Subject: How to create a gold mirror?
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[*] posted on 5-2-2019 at 09:39
How to create a gold mirror?

Has anyone ever successfully made a gold mirror in a test tube, much like the silver Tollens reaction does?

I understand that it really depends on your reducing agent as gold will be much more easily reduced. And you can't prepare that soluble ammine complex like with silver.

I found one description that used AuCl3 in combination with Ethanol / Acetaldehyde and Glucose to get a slow reaction. But it would never mirror out at all.

Perhaps some of you guys has an idea.

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[*] posted on 6-2-2019 at 00:35

The following Review of Electroless Gold Deposition Processes may be useful to you
Attachment: Review ofElectroless Gold Deposition Processes.pdf (4.4MB)
This file has been downloaded 50 times

Borosilicate glass:
Good temperature resistance and good thermal shock resistance but finite.
For normal, standard service typically 200-230°C, for short-term (minutes) service max 400°C
Maximum thermal shock resistance is 160°C
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[*] posted on 6-2-2019 at 01:11

What do you actually want to achieve? You can use a flame to vapour deposit gold onto glass or you can use a standard lustre paint to fire it on to either glass or ceramic. There is electrodeposition onto a suitably prepared surface as well. No point going into details until we get some idea about the objective you wish to accomplish.
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[*] posted on 6-2-2019 at 01:22

I am going to answer that question for myself, Chemetix. I have always fancied samples of Cu, Ag and Au for my element collection: identical test tubes with the metal mirror inside and ampouled shut to avoud dust and damage.

Ag is well documented. Cu and Ag less so.
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