| Similarity | Rank | |
|---|---|---|
| sulfuric | 0.814 | 60609 |
| ammonium | 0.805 | 48164 |
| arsenic | 0.799 | 26971 |
| sulphuric | 0.792 | 87525 |
| sulfide | 0.778 | 49224 |
| ammonia | 0.776 | 21773 |
| sulphate | 0.770 | 54192 |
| benzene | 0.766 | 46443 |
| nitrate | 0.763 | 24975 |
| chloroform | 0.757 | 67271 |
| dioxin | 0.753 | 57731 |
| phenol | 0.751 | 70784 |
| chloride | 0.748 | 23685 |
| salts | 0.748 | 18802 |
| sulfur | 0.747 | 22001 |
| dioxins | 0.746 | 77636 |
| sulfate | 0.742 | 28700 |
| phosphoric | 0.740 | 84407 |
| fluorine | 0.738 | 79157 |
| phosphorus | 0.735 | 23230 |
| phosphorous | 0.735 | 49921 |
| bromine | 0.734 | 75999 |
| anhydrous | 0.733 | 81063 |
| nitrite | 0.733 | 58090 |
| chlorinated | 0.732 | 53829 |