Greetings, Im sorry to hear of your gold chloride solution "going off" before being able to use it. It appears that your gold was knocked out of liquid form back in to solid in the form of brown depoist of which is gold and should be saved for refinement. If you have any other questions concerning this I would be more than happy to talk to you in depth and at length about gold chloride, its production and application.

Robare M. Novou