That rumor is false.   A & H does not add any aluminum to their baking soda.   
There has been considerable discussion about this topic.  It appears there is a 
chance that some aluminum tools may be used somehow in the processing or 
something and so it is theoretically possible that their baking powder may have 
picked up levels of aluminum at trace levels so low as to be undetectable.  

But, A & H has been contacted directly and denies the presence of any aluminum 
compounds.

Baking powder is another issue.  It is common to have an aluminum compound in 
baking powder.

Hope this helps avoid another long discussion.

Steve G.


--- On Sat, 1/16/10, Jim Holmes <[email protected]> wrote:

From: Jim Holmes <[email protected]>
Subject: CS>Are there aluminum compounds in some baking soda?
To: "Silver-List" <[email protected]>
Date: Saturday, January 16, 2010, 3:44 PM

I heard a rumor that Arm and Hammer has some aluminum compound in it to prevent 
caking.  

Does anyone know?

Additionally, how pure is non-reagent grade baking soda...what are common trace 
substances in it?


Thanks in advance to any who respond.

         Jim