From: Poutnik4NNTP@gmail.com   
      
   On 08/14/2015 06:58 AM, Peter Fairbrother wrote:   
   > On 14/08/15 05:00, Grokman Grokman wrote:   
   >>   
   >> MgO is almost always referred to as the lousiest form (least absorbable) of   
   dietary magnesium.   
   >> Yet, the product is simply MgCl2 + H20, with a substantially neg delta H.   
   >>   
   >> So how could it be worse (less absorbable) than MgCl2?   
   >   
   > MgO comes in several forms.   
   >   
   > Dead burnt, made at high temperature, is unreactive with stomach acids,   
   > and is used as a refractory.   
   >   
   > Light burnt, made at low temperature, is reactive with stomach acids -   
   > but it is also reactive with water, and the caustic hydroxide produced   
   > will burn your throat/oesophagus/stomach lining.   
   >   
   > Neither form is suitable for use as a dietary supplement.   
   >   
      
   Magnesium does not produce caustic hydroxide,   
   burning throat/oesophagus/stomach.   
      
   Its solubility is very low, Ks = 1.8e-11,   
   i,e, comparable with calcite.   
   and its effect of alkalizing the solutions is minimal.   
      
   It is used e.g. as antacid.   
      
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