[log in to unmask] wrote: > > I have a question about copper. I have a solution of copper nitrate and I > want to crash all of the copper out of this solution. How would I go about > doing this? > > Chris Coon > Borden Chemical > Kent, WA > > ################################################################ > TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c > ################################################################ > To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: > To subscribe: SUBSCRIBE TechNet <your full name> > To unsubscribe: SIGNOFF TechNet > ################################################################ > Please visit IPC web site (http://jefry.ipc.org/forum.htm) for additional information. > For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311 > ################################################################ Hi Chris! Just rise pH to 9 with sodium hydroxide and the copper will form copper hydroxide which is insoluble at this pH. However this copper hydroxide is difficult to get rid of, not many companies raffinate this copper salt. If you are looking for a way to get copper out of the solution as copper metal you can add some ammonia to pH 6-9 and plate it out by electrolysis. Regards Peter Fogelqvist ################################################################ TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c ################################################################ To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TechNet <your full name> To unsubscribe: SIGNOFF TechNet ################################################################ Please visit IPC web site (http://jefry.ipc.org/forum.htm) for additional information. For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311 ################################################################