From: Jacob Zabicky (zabicky$##$bgumail.bgu.ac.il)
Date: Tue Jan 29 2002 - 08:33:15 EST
Hello Gary,
Depending on what is your final specification for the purity of the anh.
MgCl2, it may be an easy or a very difficult task. The hexahydrate readily
loses water on slight heating, until the water left is a few percent. To
remove the last traces you need to heat strongly, but then the salt
undergoes partial hydrolysis, yielding magnesium hydroxide (or MgO,
depending on the temperature) and gaseous hydrogen chloride. If you don't
mind these impurities, just heat the hydrate in an electrical oven to about
300 C (keep air circulating if you don't want to corrode the oven with
moist HCl).
All the best,
Jacob
At 7:39 28/1/2, Gary Randall wrote:
>Hello,
>
>Does anyone know how to obtain anhydrous magnesium chloride from material
>that is 98% according to the manufacturers (Aldrich), and what are the best
>storage conditions to keep it dry?
>
> Gary Randall
>
> Dr. Gary Randall,
> Research Scientist , SCYNEXISEurope Ltd.
>
>
>
>
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Prof. Jacob Zabicky
Institutes for Applied Research
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