Message:

<p>[QUOTE=&quot;calcol, post: 2650417, member: 77639&quot;]Cobalt chloride is added to silica gel and other desciants in tiny amounts.&nbsp; It transitions from anhydrous (no water and blue) to dihydrate (two waters and purple) and eventually to hexahydrate (six waters and pink) and back again in response to atmospheric water concentration (i.e. relative humidity).&nbsp; It&#039;s non-volatile, so it&#039;s no gaseous hazard to coins or humans.&nbsp; Yeah, if you dump a bunch of strong acid (e.g. nitric, sulfuric, etc.) on it, you&#039;ll get hydrochloric acid vapors.&nbsp; So my advice is not to store strong acids in the safe with your coins.</p><p><br /></p><p>Cobalt is a an essential trace element.&nbsp; You have to have it or die of anemia.&nbsp; Further, for humans and most animals, it must be in the form of vitamin B12.</p><p><br /></p><p>Cal[/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