| Subject | Spanish | English |
| chem. | butadieno-1,3 | erythrene |
| chem. | 1,3-butadieno | 1, 3-butadiene |
| chem. | 1,3-butadieno | buta-1, 3-diene |
| chem. | 1,3-butadieno | bivinyl |
| chem. | butadieno-1,3 | dl vinyl |
| chem. | 2-Cloro-1,3-butadieno | 2-Chloro-1,3-butadiene |
| chem. | 2-cloro-butadieno-1,3 | chloroprene |
