| Similarity | Rank | |
|---|---|---|
| sulphur | 0.919 | 34384 |
| sulfide | 0.900 | 49224 |
| sulfuric | 0.866 | 60609 |
| ammonia | 0.861 | 21773 |
| oxides | 0.859 | 42880 |
| nitrogen | 0.842 | 12237 |
| Sulfur | 0.841 | 70589 |
| sulfates | 0.838 | 91637 |
| sulphuric | 0.835 | 87525 |
| dioxide | 0.835 | 10273 |
| hydrocarbons | 0.830 | 32458 |
| sulphate | 0.820 | 54192 |
| phosphorus | 0.819 | 23230 |
| sulfate | 0.818 | 28700 |
| fluorine | 0.815 | 79157 |
| ammonium | 0.815 | 48164 |
| benzene | 0.814 | 46443 |
| chloride | 0.808 | 23685 |
| chlorine | 0.804 | 17545 |
| arsenic | 0.803 | 26971 |
| sulphide | 0.803 | 82356 |
| phosphorous | 0.801 | 49921 |
| bromine | 0.799 | 75999 |
| alkali | 0.798 | 55573 |
| hydroxide | 0.796 | 49273 |