| 1/00 | Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly |
| 1/02 | Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly Superphosphates |
| 1/04 | Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly Double-superphosphate; Triple-superphosphate Other fertilisers based essentially on monocalcium phosphate |
| 1/06 | Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly Ammoniation of superphosphates (fertilisers based essentially on ammonium orthophosphate C05B 7/00) |
| 1/10 | Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly Apparatus for the manufacture of superphosphates |
| 3/00 | Fertilisers based essentially on di-calcium phosphate (C05B 11/00 takes precedence) |
| 5/00 | Thomas phosphate; Other slag phosphates |
| 7/00 | Fertilisers based essentially on alkali or ammonium orthophosphates (C05B 11/00 takes precedence) |
| 9/00 | Fertilisers based essentially on phosphates or double phosphates of magnesium (C05B 11/00 takes precedence) |
| 11/00 | Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes |
| 11/02 | Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes Pretreatment |
| 11/04 | Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid |
| 11/06 | Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid using nitric acid (nitrophosphates) |
| 11/08 | Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid using sulfuric acid |
| 11/10 | Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid using orthophosphoric acid |
| 11/12 | Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid using aqueous hydrochloric acid |
| 11/14 | Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid using wet gaseous acids |
| 11/16 | Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using alkaline lyes |
| 13/00 | Fertilisers produced by pyrogenic processes from phosphatic materials |
| 13/02 | Fertilisers produced by pyrogenic processes from phosphatic materials from rock phosphates (C05B 13/06 takes precedence) |