Sales Specifications Appearance: Crystal Color: White Assay: 97.5% Min Sulfate (SO4): 0.10% Max Lead (Pb): 0.01% Max Anti- Caking agent: 1.0 â?? 2.0% Iron (Fe): 0.05% Max Moisture (H2O): 0.2% Max Packing 286.60 LB Drum, 4 Drums per pallet DOT Transportation Shipping Name: Corrosive solid, acidic, inorganic, n.o.s.(ammonium fluoborate) UN Number: 3260 Packing Group: III Hazard Class: 8