Expert: George Maxwell - 10/1/2007

Question
I have a two part sterling salt shaker that is sealed by the chemical reaction of damp salt.  Need your advise to open it.  The piece dates from the 1880's but I have no idea how long the salt has been in the shaker.

Answer
Thank you for your question.

In solving this problem, it's important to appreciate that a seal caused by damp salt is merely a physical blockage caused by unusual crystalisation of the salt. If an actual chemical reaction has occured, the silver will be pitted and corroded, and there's little you can do about it.

To clear the salt blockage and unseal the shaker, immersing the article in hot water for 10-15 minutes is the normal approach. This dissolves the salt crystals and thus removes the seal. As silver is relatively unreactive, this method shouldn't damage the article, but for silver-plated articles, or those which are valuable, you should ask an antiques dealer for advice.

You may also wish to research the use of a hot washing-soda solution containing aluminium foil pieces, which is normally used to clean tarnished silver: such a solution would not only dissolve the salt but would also clean the surface of the silver in the process. As I say, though, you'd be wise to check the procedue via. google first.

Hope this helps.