Dear Sir, We can supply Ammonium Sulfate (NH4) 2SO4 larger Quantities Chemical Content : Nitrogen (N) 21 min. Sulfur (S) 24 min. Free Acidity (H2SO4) 0.1 max Moisture 1.0 max Contact: Tel / Fax : 001 208 723 1914 or Our yahoo Id: cigar2000usa@yahoo.com Please reply real buyers only. Thanks, Cigar