28730 - Nitrogenous fertilizers (Miscellaneous)
28731 - Synthetic ammonia, Nitric acid & Ammonium compounds
2873111 - - Nitric acid (100% HNO 3)
2873130 - - Ammonia, Synthetic anhydrous (100% NH 3): Fertilizer use
2873132 - - Ammonia, Synthetic anhydrous (100% NH 3): other Uses
2873141 - - Gray ammonium chloride
2873142 - - Ammonium nitrate solution produced for sale as such for Direct application
2873143 - - White ammonium chloride
2873144 - - Ammonium nitrate solution produced for Consumption in the manufacture of Nitrogen solutions or other Fertilizer materials
2873146 - - Solid ammonium nitrate (excl fertilizer grade material sold for Explosive uses)
2873148 - - Ammonium nitrate for Explosives & other Uses (Solution & Solid)
2873150 - - Ammonium compounds: Nitrate (100% NH 4NO 3): Original solution
2873151 - - Ammonium compounds: Fertilizer use: Solid
2873152 - - Ammonium compounds: Fertilizer use: Solution produced for Sale, as such, for Direct application
2873153 - - Ammonium compounds: Explosives & other Uses (Solution & Solid)
2873154 - - Ammonium compounds: Fertilizer use: Solution produced for Consumption in the manufacture of Nitrogen solutions or other Fertilizer materials
2873156 - - Ammonium sulfate: Synthetic (100% (NH 4) 2SO 4)
2873158 - - Ammonium sulfate: Byproduct, other than Coke oven (100% (NH 4) 2SO 4)
2873165 - - Nitrogen solutions + Mixtures (100% N): Solutions containing ammonia
2873166 - - Nitrogen solutions + Mixtures (100% N): Ammonium nitrate/urea solutions
2873167 - - Nitrogen solutions + Mixtures (100% N): all other Two-component products
2873169 - - Ammonium compounds + Ammonium chloride
2873173 - - Ammonium nitrate/calcium nitrate solutions
2873175 - - All other Two-component nitrogen solution products
2873177 - - Other Ammonium compounds (incl Ammonium chloride, Gray & White)
28732 - Urea
2873216 - - Urea for Fertilizer use (100% urea): Solutions produced as intermediate in nitrogen solutions
2873218 - - Urea for Fertilizer use (100% urea): Solid
2873221 - - Urea for General use (100% urea): Feed (Solid & Solution)
2873222 - - Urea for General use (100% urea): all other (Solid & Solution)
28733 - Fertilizer materials (Organic) + Activated sewage sludge, processed tankage & other Natural fertilizer
2873XX0 - - Nitrogenous fertilizers (Miscellaneous - Volume)
2873XX2 - - Nitrogenous fertilizers (Miscellaneous - Speciality)