what is ammonium NH4 ?

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    12:39, 16 Jan 2013Seneye Matt[MISSING: System.API.page-diff-added-removed] 
    11:55, 16 Jan 2013Seneye Matt[MISSING: System.API.page-displayname-changed] 
    11:54, 16 Jan 2013Seneye Matt[MISSING: System.API.page-diff-added-removed] 
    11:48, 16 Jan 2013Seneye Matt[MISSING: System.API.page-diff-added-removed] 
    11:44, 16 Jan 2013Seneye Matt[MISSING: System.API.page-diff-added] 
    17:50, 2 Dec 2012Seneye Matt[MISSING: System.API.page-displayname-changed]