Message:

<p>[QUOTE=&quot;JMGallego, post: 2666337, member: 35622&quot;]Thanks.</p><p><br /></p><p>The main reaction product is copper BTA, however, if present, there will copper chloride BTA and copper oxide BTA.&nbsp; The copper chloride BTA is of great interest, if the coin was not properly clean before the treatment leaving minute copper chlorides, the BTA will prevent those copper chlorides from coming into contact with water (or humidity) because it creates a hydrophobic film over the copper chlorides.&nbsp; This prevents the verdigris disease which is a cycle of creating hydrochloric acid out of the chlorides and corroding the copper metal.[/QUOTE]</p><p><br /></p>

Your name or email address:

Do you already have an account?

• No, create an account now.
• Yes, my password is:
• Forgot your password?

Stay logged in