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Chemistry Forums for Students => Inorganic Chemistry Forum => Topic started by: JWP on February 06, 2006, 08:50:52 PM

Title: What is the chemical difference between light and heavy magnesium carbonate?
Post by: JWP on February 06, 2006, 08:50:52 PM: What is the chemical difference between light and heavy magnesium carbonate?
Title: Re:Magnesium carbonate
Post by: Mitch on February 06, 2006, 09:21:17 PM: light and heavy being defined as what?
Title: Re: What is the chemical difference between light and heavy magnesium carbonate?
Post by: mike on February 07, 2006, 07:20:08 PM: I didn't think there was a chemical difference. I thought one was just denser (ie a finer grade and therefore more tightly packed) than the other ???

I could be wrong.... :-\
Title: Re: What is the chemical difference between light and heavy magnesium carbonate?
Post by: Morphic flip on February 09, 2006, 03:34:00 PM: it`s the same with sodium carbonate, bulk density`s are different.
light - normally higher purity as well.
normal grade is more granular.
Title: Re: What is the chemical difference between light and heavy magnesium carbonate?
Post by: asmaaalseedaraa on October 16, 2007, 08:50:19 PM: Quote from: JWP on February 06, 2006, 08:50:52 PM
What is the chemical difference between light and heavy magnesium carbonate?

the difference is just restracted in chemical structure which the light magnesium carbonate has 3 of H2O in it and 4 of H2O for a heavy.
Title: Re: What is the chemical difference between light and heavy magnesium carbonate
Post by: UnintentionalChaos on October 23, 2007, 09:08:34 PM: I think that this refers to the method of preparation and resulting composition. A soluble magnesium salt added to a cold carbonate solution affords a voluminous product of basic magnesium carbonate (a poorly defined mixture of magnesium carbonate and magnesium hydroxide). A hot or boiling carbonate solution, or preferably a bicarbonate solution, yields much more pure magnesium carbonate as a precipitate which settles rapidly from the solution, hence "heavy." I remember this discussion from somewhere...I wouldn't quote me on this though...