| Similarity | Rank | |
|---|---|---|
| nox | 0.900 | 28969 |
| tetrachloride | 0.864 | 38419 |
| so2 | 0.863 | 62009 |
| nitrous | 0.855 | 29606 |
| mtbe | 0.854 | 87435 |
| trioxide | 0.853 | 83599 |
| c02 | 0.850 | 50452 |
| phosgene | 0.848 | 98640 |
| anthropogenic | 0.846 | 51620 |
| fluorocarbon | 0.844 | 92192 |
| ethane | 0.840 | 70857 |
| co2 | 0.839 | 18793 |
| zirconium | 0.836 | 82220 |
| nitric | 0.835 | 22052 |
| hfc | 0.835 | 66988 |
| vocs | 0.830 | 67555 |
| chlorine | 0.825 | 10537 |
| beryllium | 0.822 | 52345 |
| ammonium | 0.819 | 22976 |
| bromine | 0.818 | 45010 |
| hexafluoride | 0.816 | 78594 |
| methane | 0.816 | 11786 |
| polycyclic | 0.816 | 68633 |
| condensate | 0.815 | 47200 |
| hydrocarbon | 0.813 | 12320 |