Historical clue formulations

• Chemical compound in plastics and rubber — 2024-07-07
• Compound found in latex — 2021-01-16
• Common plastic base — 2016-05-22
• Disposable cup material — 2014-08-28
• Compound in disposable coffee cups — 2013-01-16
• Foamcore component — 2008-07-20
• C8H8 — 2007-02-25
• Component of synthetic rubber — 2005-07-30
• Synthetic rubber ingredient — 2002-09-01
• Component of synthetic rubber — 1996-06-02
• Material used in making insulation — 1994-05-14