Description Ammonium Hydroxide, ACS 28.0-30.0% NH3 Basis, 1L For Research & Development Not for drug, human, animal, or food use Specifications: Appearance Clear, colorless Assay (NH4OH) 28.0-30.0% Carbon Dioxide (CO2) <0.002% Chloride <0.5 ppm Heavy Metals (as Pb) <0.5 ppm Iron (Fe) <0.2 ppm Nitrate (NO3) <2 ppm Phosphate (PO4) <2 ppm Residue after Ignition <0.002% Substances Reducing Permanganate Pass Test Total Sulfur (as SO4) <2 ppm CAS: 1336-21-6 FORMULA: NH4OH