Polyphosphoric Acid is used in organic synthesis for cyclizations and acylations. It is also used industrially as a dehydrating agent, catalyst, and oxidizing agent. Specifications Appearance: Colorless Viscous Clear Liquid Phosphoric Acid H3PO4, % w/w: 115 Min Arsenic as As, ppm: 100 Max Sulphate as SO4, ppm: 100 Max Iron as Fe, ppm: 20 Max Nitrate as NO3, ppm: 5 Max Total Heavy Metals as Pb, ppm: 20 Max Color, ppm: 30 Max Fluoride as F, ppm: 10 Max Phosphate P2O5, % w/w: 83.30 Min Gravity (at 20�°C): 2.015 Min Packing 749.564 Lb (340 KG) drum, 4 drums per pallet 3527.36 lbs (1600 kg) IBC Tote DOT Transportation UN/NA: UN3264 Proper Shipping Name: Corrosive Liquid, Acidic, Inorganic, N.O.S. (Polyphosphoric Acids) Hazard Class: 8 Packing Group: III