ISOPRENE
| Date | Clue |
|---|---|
| 2025-05-25 | Compound used to make synthetic rubber |
| 2017-06-25 | Petroleum byproduct used to make synthetic rubber |
| 1998-07-28 | Liquid in synthetic rubber manufacture |
| Date | Clue |
|---|---|
| 2025-05-25 | Compound used to make synthetic rubber |
| 2017-06-25 | Petroleum byproduct used to make synthetic rubber |
| 1998-07-28 | Liquid in synthetic rubber manufacture |