Product name Amino Trimethylene Phosphonic Acid Nitrilo-tri (Methylphosphonic Acid) CAS No. : 6419-19-8 Appearance : White crystalline compound Molecular weight : 299.05 Assay : Min 90 % ( +/-1) pH : 2 Chloride : max.1 % Iron : max.0.000035 % Phosphorous Acid (as PO33-)max.4 % Phosphorous Acid (as PO43-)Max 0.8 %