| Subject | Portuguese | Spanish |
| chem. | 5-alil-1,3-benzodioxole | 5-Alil-1,3-benzodioxol |
| chem. | 3-Amino-1,2,4-triazolo | aminotriazol |
| chem. | 3-Amino-1,2,4-triazolo | amitrol |
| IT | audiofrequência a 3,1 kHz | audiofrecuencia a 3,1 kHz |
| commun. | banda de 1/3 de oitava | banda de un tercio de octava |
| food.ind. | 1,2,3,4-butanotetrol | tetrahidroxibutano |
| food.ind. | 1,2,3,4-butanotetrol | mesoeritritol |
| food.ind. | 1,2,3,4-butanotetrol | eritritol |
| food.ind. | 1,2,3,4-butanotetrol | eritrito |
| food.ind. | 1,2,3,4-butanotetrol | 1,2,3,4-butanotetrol |
| chem. | cloridrato de 3-deciloxi-2-hidroxi-1-aminopropano | chlorhidrato de 3-deciloxi-2-hidroxi-1-aminopropano |
| chem. | cloridrato de 3-deciloxi-2-hidroxi-1-aminopropano | decominol |
| food.ind. | 1,2,3-diacetato de propanetriol | diacetato de glicerilo |
| food.ind. | 1,2,3-diacetato de propanetriol | diacetina |
| food.ind. | 1,2,3-diacetato de propanetriol | 1,2,3-propanotriol diacetato |
| chem. | 1,3-dicloropropano | 1,3-dicloro-2-propanol |
| chem. | 1,3-dicloro-2-propanol | 1,3-dicloro-2-propanol |
| chem. | 1,3-dicloro-2-propanolo | 1,3-dicloro-2-propanol |
| chem. | 1-5-etilsulfonil-1,3,4-tiadiazole-2-il-1,3-dimetilureia | 1-5-etilsulfonil-1,3,4-tiadiazol-2-il-1,3-dimetilourea |
| IMF. | Divisão 1, 2, 3, ... | División 1, 2, 3, ... |
| IMF. | Divisão de Operações Fiscais 1, 2, 3 | División de Operaciones Fiscales 1, 2, 3 |
| life.sc. | endo-1,3^4-beta-glucanase | endo-1,3-beta-glucanasa |
| chem. | 2-etil-1,3-hexanodiol | 2-etilhexan-1,3-diol |
| agric. | "3 fase 1" | túnel sistema |
| agric. | "3 fase 1" | "3 fase 1" |
| food.ind. | 4-hexil-1,3-benzenodiol | hexilresorcinol |
| food.ind. | 4-hexil-1,3-benzenodiol | 4-hexil-1,3-bencenodiol |
| food.ind. | 4-hexil-1,3-benzenodiol | 4‐hexilresorcinol |
| chem. | 2-metil-1,3-butadieno | isopreno |
| chem. | 6-metil-1,3-ditiolo4,5-bquinoxalina-2-ona | 6-metil-1,3-ditiolo4,5-bquinoxalin-2-ona |
| chem. | terc-butil-4 fenilo-1 metoxi-4 fenilo-3 propanediona-1,3 | 1-4-tercbutil-fenil-3 metoxifenil 1.3. propanodiona |
| chem. | 1,3-propanossultona | 1,3-propanosultona |
| chem. | 1,3-propiolactona | 1,3-propiolactona |
| chem. | 1,3-propiolactona | 3-propanolido |
| commun. | telesserviço de telefonia de 3,1 kHz | teleservicio telefonía a 3,1 kHz |
| chem. | 1,2,3,6-tetra-hidro-N-1,1,2,2-tetracloroetiltioftalimida | captafolISO |
| chem. | 1,2,3,6-tetra-hidro-N-1,1,2,2-tetracloroetiltioftalimida | 1,2,3,6-tetrahidro-N-1,1,2,2-tetracloroetiltioftalimida |
| chem. | 2,4,6-trianilina-p-carbo-2'-etil-hexil-1'-oxi-1,3,5-triazina | 2,4,6-trianilina-p-carbo-2'-etilhexil-1'-oxi 1,3,5-triazina |
| chem. | 1,3,5-triazina-2,4,6-triol | ácido cianúrico |
| chem. | 1,3,5-triazina-2,4,6-triol | Csub3subHsub3subNsub3subOsub3sub |
| food.ind. | tricarboxilato de 1,2,3-trietil-2-hidroxipropano | citrato de trietilo |
| food.ind. | tricarboxilato de 1,2,3-trietil-2-hidroxipropano | trietil-2-hidroxipropano-1,2,3-tricarboxilato |
| food.ind. | tricarboxilato de 1,2,3-trietil-2-hidroxipropano | citrato de etilo |
| chem. | 2,4,6-tri-hidroxi-1,3,5-triazina | ácido cianúrico |
| chem. | 2,4,6-tri-hidroxi-1,3,5-triazina | Csub3subHsub3subNsub3subOsub3sub |
| chem. | 1,2,3-trimetilbenzeno | mesitileno |
