1/00 | Ammonia; Compounds thereof |
1/02 | Ammonia; Compounds thereof Preparation or separation of ammonia |
1/04 | Ammonia; Compounds thereof Preparation or separation of ammonia Preparation of ammonia by synthesis (preparation or purification of gas mixtures for ammonia synthesis C01B 3/02) |
1/08 | Ammonia; Compounds thereof Preparation or separation of ammonia Preparation of ammonia from nitrogenous organic substances |
1/10 | Ammonia; Compounds thereof Preparation or separation of ammonia Separation of ammonia from ammonia liquors, e.g. gas liquors |
1/12 | Ammonia; Compounds thereof Preparation or separation of ammonia Separation of ammonia from gases and vapours |
1/14 | Ammonia; Compounds thereof Preparation or separation of ammonia Separation of ammonia from gases and vapours Saturators |
1/16 | Ammonia; Compounds thereof Halides of ammonium |
1/18 | Ammonia; Compounds thereof Nitrates of ammonium |
1/20 | Ammonia; Compounds thereof Sulfides; Polysulfides |
1/22 | Ammonia; Compounds thereof Sulfites of ammonium |
1/24 | Ammonia; Compounds thereof Sulfates of ammonium (C01C 1/14 takes precedence) |
1/242 | Ammonia; Compounds thereof Sulfates of ammonium (C01C 1/14 takes precedence) Preparation from ammonia and sulfuric acid or sulfur trioxide |
1/244 | Ammonia; Compounds thereof Sulfates of ammonium (C01C 1/14 takes precedence) Preparation by double decomposition of ammonium salts with sulfates |
1/245 | Ammonia; Compounds thereof Sulfates of ammonium (C01C 1/14 takes precedence) Preparation from compounds containing nitrogen and sulfur |
1/246 | Ammonia; Compounds thereof Sulfates of ammonium (C01C 1/14 takes precedence) Preparation from compounds containing nitrogen and sulfur from sulfur-containing ammonium compounds |
1/247 | Ammonia; Compounds thereof Sulfates of ammonium (C01C 1/14 takes precedence) Preparation from compounds containing nitrogen and sulfur from sulfur-containing ammonium compounds by oxidation with free oxygen |
1/248 | Ammonia; Compounds thereof Sulfates of ammonium (C01C 1/14 takes precedence) Preventing coalescing or controlling form or size of crystals |
1/249 | Ammonia; Compounds thereof Sulfates of ammonium (C01C 1/14 takes precedence) Deacidifying the crystals |
1/26 | Ammonia; Compounds thereof Carbonates or bicarbonates of ammonium |