| Similarity | Rank | |
|---|---|---|
| phosgene | 0.897 | 98640 |
| nitrous | 0.891 | 29606 |
| ethane | 0.888 | 70857 |
| trioxide | 0.881 | 83599 |
| halon | 0.879 | 27495 |
| fluorocarbon | 0.871 | 92192 |
| nitric | 0.868 | 22052 |
| ozone-depleting | 0.866 | 40272 |
| &sub2; | 0.864 | 34174 |
| polychlorinate | 0.863 | 45744 |
| phenol | 0.861 | 28644 |
| mtbe | 0.861 | 87435 |
| nox | 0.858 | 28969 |
| vocs | 0.857 | 67555 |
| so2 | 0.855 | 62009 |
| biphenyl | 0.852 | 49287 |
| bromine | 0.851 | 45010 |
| refrigerant | 0.849 | 52632 |
| methanol | 0.848 | 19662 |
| hfc | 0.847 | 66988 |
| chlorinate | 0.847 | 31192 |
| monoxide | 0.845 | 12904 |
| hexafluoride | 0.844 | 78594 |
| ozone-damaging | 0.843 | 88642 |
| methyl | 0.840 | 16589 |