Chloride (Cl): <0.001% Sulfate(SO4): <0.003% Heavy Metals (Pb): <0.001% Potassium (K): <0.03% Ammonium (NH4): <0.05% Mol. Wt:60.1 Common Name: Carbamide Formula: CH4N2O Dimensions: 3.50 x 7.00 x 3.50, Weight: 1.23, Cas#: 57-13-6 Research or further manuf (1 per EA)