Clue | Source | Date |
---|---|---|
Gas bottled up in polythene tubes | ||
Compound in synthetic rubber | New York Times | 22 May 2018 |
Compound in synthetic rubber | ||
Hydrocarbon obtained from crude oil | LA Times Daily | 10 Jun 2016 |
Hydrocarbon obtained from crude oil | ||
Carbon compound found in crude oil | LA Times Daily | 07 Mar 2015 |
Carbon compound found in crude oil | ||
Gas is not entirely fresh | ||
C4H8 | ||
Compound found in synthetic rubber | ||
Hydrocarbon derived from petroleum | ||
C4H8 |