| Similarity | Rank | |
|---|---|---|
| propellant | 0.800 | 43000 |
| formaldehyde | 0.782 | 23163 |
| iodine | 0.766 | 24168 |
| chlorine | 0.763 | 10537 |
| butane | 0.758 | 28112 |
| refrigerant | 0.756 | 52632 |
| chlorofluorocarbon | 0.748 | 24061 |
| tetrachloride | 0.747 | 38419 |
| phosgene | 0.746 | 98640 |
| halon | 0.744 | 27495 |
| permanganate | 0.743 | 43027 |
| ultra-violet | 0.743 | 23981 |
| cfc-free | 0.738 | 44334 |
| uva | 0.737 | 29497 |
| hypochlorite | 0.733 | 36579 |
| ethane | 0.731 | 70857 |
| ammonia | 0.731 | 10958 |
| propane | 0.729 | 33305 |
| non-toxic | 0.728 | 26834 |
| uvb | 0.725 | 33409 |
| chlorinate | 0.725 | 31192 |
| polychlorinate | 0.723 | 45744 |
| degreaser | 0.723 | 44543 |
| coolant | 0.723 | 33789 |
| copal | 0.723 | 79389 |