| English | Spanish |
| A1 | E173 |
| A1 | aluminio |
| A1 | CI pigment metal |
| 5-Allyl-1, 3-benzodioxole | 5-Alil-1,3-benzodioxol |
| 3-amino-1, 2, 4-triazole | aminotriazol |
| 3-amino-1, 2, 4-triazole | amitrol |
| 1,2-benzenedicarboxylic acid, di-C6-8-branched alkyl esters, C7-rich | ácido 1,2-bencenodicarboxílico, di-C6-8-alquilésteres ramificados, ricos en C7 |
| 1,2-benzenedicarboxylic acid, di-C7-11-branched and linear alkyl esters | ácido 1,2-benzenodicarboxílico, di-C7-11-alquilésteres ramificados y lineales |
| 1, 3-bisphenylsulfonylthio-2-N,N-dimethylaminopropane | bensultap |
| buta-1, 3-diene | 1,3-butadieno |
| 1, 3-butadiene | eritreno |
| 1, 3-butadiene | divinilo |
| 1, 3-butadiene | 1,3-butadieno |
| 1-butylene | 1-buteno |
| carcinogen category 1 | sustancia carcinógena categoría 1 |
| carcinogen category 1 | carcinógeno categoría 1 |
| carcinogenic substance category 1 | carcinógeno categoría 1 |
| carcinogenic substance category 1 | sustancia carcinógena categoría 1 |
| 1-chloro-2 | 1-cloro-2,3-epoxipropano |
| 2-Chloro-1,3-butadiene | 2-Cloro-1,3-butadieno |
| 1-chloro-1-nitropropane | 1-cloro-1-nitropropano |
| CI food black 1 | negro PN |
| CI food black 1 | CI food black 1 |
| CI food black 1 | negro brillante BN |
| CI food black 1 | E151 |
| CI food blue 1 | CI food blue 1 |
| CI food blue 1 | indigotina |
| CI food blue 1 | carmín de índigo |
| CI food blue 1 | E132 |
| cis-1, 2-ethylene-dicarboxylic acid | ácido maleico |
| copolymer of vinylidene chloride with 1 | copolímero de cloruro de vinilideno y de 1,2,3,3,3-pentafluoropropileno |
| copolymer of vinylidene fluoride with 1 | copolímero de fluoruro de vinilideno y de 1,2,3,3,3-pentafluoropropileno |
| Decachloropentacyclo /5, 2, 1, O2, 6, O3, 9, O5, 8/ decan-4-one | clordecone |
| decyloxy-3-hydroxy-2amino-1 propane hydrochlorate | decominol |
| decyloxy-3-hydroxy-2amino-1 propane hydrochlorate | chlorhidrato de 3-deciloxi-2-hidroxi-1-aminopropano |
| 1, 6-di 4-amidinophenoxy-n-hexane | hexamidina |
| 1, 6-di 4-amidinophenoxy-n-hexane | 1,6-di 4-amidinofenoxil-n-hexano |
| 1,3-diazine | pirimidina |
| 1, 2-Dibrom-3-chloropropane | 1,2-Dibromo-3-cloropropano |
| 1, 2-dibromo-3-chloropropane | 1,2-dibromo-3-cloropropano |
| 1, 2-dibromoethane | dibromuro de etileno |
| 1, 2-dibromoethane | 1,2-dibromoetano |
| 1, 2-dibromoethane ethylenedibromide | dibromuro de etileno |
| 1, 4 Dichlorobenzene | 1,4-diclorobenzeno |
| 1, 4-dichlorobut-2-ene | 1,4-diclorobut-2-eno |
| 1, 2-dichloroethane | 1,2-dicloroetano |
| 1-Dichloroethylene | cloruro de vinilideno |
| 1, 3-dichloropropan-2-ol | 1,3-dicloro-2-propanol |
| 1, 3-dichloro-2-propanol | 1,3-dicloro-2-propanol |
| 1, 2-dihydroxyanthraquinone | alizarina |
| 1, 2-dihydroxyanthraquinone | 1,2-dihidroxi-antraquinona |
| 1, 4 dihydroxybenzen | 1,4-dihidroxibenceno |
| 1, 4-dihydroxybenzene | hidroquinona |
| 1, 1'-Dimethyl-4, 4'-bipyridylium ion | paraquat |
| Dimethyl cis-1-methyl-2-methylcarbamoylvinyl phosphate | monocrotofos |
| 1, 3-dimethyl-barbituric acid | ácido 1,3-dimetilbarbitúrico |
| 1, 2-dimethylbenzene | xilol |
| 1, 2-dimethylbenzene | xileno |
| 1, 4-dimethylcyclohexane | 1,4-dimetilciclohexano |
| 1, 2-dimethylhydrazine | 1,2-dimetilhidrazina |
| 1, 1-dimethylpiperidinium chloride | cloruro de 1,1-dimetilpiperidinio |
| 1-5-ethylsulphonyl-1,3,4-thiadiazol-2-yl-1, 3-dimethylurea | 1-5-etilsulfonil-1,3,4-tiadiazol-2-il-1,3-dimetilourea |
| 3-3,4 Dichlorophenyl-1, 1-diméthylurea | diuron |
| 1, 4-dioxan-2, 3-dityl bil 00-diethyl phosphorobithioate | dioxation |
| 1, 4-dioxane | 1,4-dioxano |
| 1,4-dioxin | 1,4-dioxina |
| 1, 2-diphenylhydrazine | hidrazobenceno |
| 1-dodecene | 1-dodeceno |
| 1, 2-epoxybutane | 1,2-epoxibutano |
| 1, 2-epoxyethane | óxido de etileno |
| ethane-1, 2-diol | etilenglicol |
| 6-Ethoxy-1, 2-dihydro-2, 2, 4-trimethylquinoline | etoxiquina |
| 2-ethylhexan-1, 3-diol | 2-etilhexan-1,3-diol |
| glycerol 1- 4-aminobenzoate | 4-aminobenzoato de 1-glicerol |
| 1, 4, 5, 6, 7, 8, 8-Heptachloro-3a, 4, 7, 7a-tetrahydro-4, 7-endo-methanoindene | heptacloro |
| 1-hexene | 1-hexeno |
| inteferon alfacon-1 | interferón alfacón-1 |
| 1-Isopropyl-3-methylpyrazol-e-yl dimethylcarbamate | isolan |
| methyl 1- butylcarbamoyl | benomilo |
| methyl-1butylcarbamoyl-2-benzimidazolecarbamate | benomil |
| 2-methyl-1, 3-butadiene | isopreno |
| 6-methyl-1, 3-dithiolo4,5-bchinoxalin-2-one | 6-metil-1,3-ditiolo4,5-bquinoxalin-2-ona |
| 1-methyl piperidine | 1-metilpiperidina |
| 1-methyl-3-nitro-1-nitrosoguanidine | 1-metil-3-nitro-1-nitrosoguanidina |
| 1-methyl-2-pyrrolidone | 1-metil-2-pirrolidona |
| 3-monochloro-1, 2-propanediol | 3-monocloro-1,2-propanodiol |
| mutagen category 1 | mutágeno de la categoría 1 |
| mutagenic category 1 | mutágeno de la categoría 1 |
| Na2CrO4.1OH2O | cromato de sodio |
| Na2CrO4.1OH2O | CrO4Na2.1OH2O |
| 1-naphtalene-acetic acid | ácido 1-naftalenacético |
| 1-naphthoic acid | ácido 1-naftoico |
| N-Methyl-11,3-benzodioxol 5-yl-2-butanamine | N-metilo-1-1,3-benzodioxol 5-yl-2-butanamina |
| number 1 etch | ataque Salier |
| 1, 2, 4, 5, 6, 7, 8, 8-Octachloro-3a, 4, 7, 7a-tetrahydro-4, 7-endomethanoindane | clordán |
| 1, 2, 4, 5, 6, 7, 8, 8-Octachloro-3a, 4, 7, 7a-tetrahydro-4, 7-endomethanoindane | clordano |
| 1-octanol | 1-octanol |
| 1-octanol/water partition coefficient | coeficiente de reparto octanol/agua |
| 2.1 patent blue | 2.1 azul pantentado V |
| 2.1 patent blue | azul patentado V |
| 2.1 patent blue | E 131 |
| 1-phenyl-2-propanone | fenil-1-propanona-2 |
| 1-phenyl-2-propanone | fenilacetona |
| 1-phenyl-2-propanone | 1-fenil-2-propanona |
| propan-1-ol | alcohol propílico |
| propan-1-ol | propan-1-ol |
| propane-1, 2-diol | propano-1,2-diol |
| propane-1, 2, 3-triol | glicerina |
| propane-1, 2, 3-triol | E422 |
| propane-1, 2, 3-triol | glicerol |
| 1-4-tert-butylphenyl-3-4-methoxyphenyl propane-1-3-dione | 1-4-tercbutil-fenil-3 metoxifenil 1.3. propanodiona |
| 1, 3-propanesultone | 1,3-propanosultona |
| 1-1,3-benzodioxol-5-ylpropan-2-one | 3,4-metilenodioxifenilpropano-2-ona |
| 2-propene 1-ol | alcohol alílico |
| 1, 3-propiolactone | 3-propanolido |
| 1, 3-propiolactone | 1,3-propiolactona |
| 1, 1, 2, 2-tetrachloroethene | tetracloroetano |
| 1, 1, 2, 2-tetrachloroethene | percloroetileno |
| 1, 2, 3, 6-tetrahydro-N-1,1,2,2-tétrachloroethylthio phthalimide | captafolISO |
| 1, 2, 3, 6-tetrahydro-N-1,1,2,2-tétrachloroethylthio phthalimide | 1,2,3,6-tetrahidro-N-1,1,2,2-tetracloroetiltioftalimida |
| the scum contained a considerable number of sulphate ions but no chloride ions %1F De Vries | el fango contenía grandes cantidades de iones sulfato, pero no de iones cloruro |
| toxic for reproduction category 1 | sustancia tóxica para la reproducción, categoría 1 |
| trans-1, 2-ethylene-dicarboxylic acid | E297 |
| trans-1, 2-ethylene-dicarboxylic acid | ácido fumárico |
| 2, 4, 6-trianilino-p-carbo-2'-ethylhexyl-1'-oxi-1, 3, 5-triazine | 2,4,6-trianilina-p-carbo-2'-etilhexil-1'-oxi 1,3,5-triazina |
| 2, 2, 2-Trichloro-1, 1-bis4-chlorophenylethanol | dicofol |
| 1,1,1-Trichloro-2,2-bis4-chlorophenylethane | diclorodifeniltricloroetano |
| 1,1,1-trichloroethane | metilcloroformo |
| 1,1,1-trichloroethane | 1,1,1-tricloroetano |
| 1, 1, 1-trichloroethane | 1,1,1-Tricloroetano |
| 1,2,3-trichloropropane | 1,2,3-tricloropropano |
| 2, 4, 6-trihydroxy-1, 3, 5-triazine | ácido cianúrico |
| 2, 4, 6-trihydroxy-1, 3, 5-triazine | Csub3subHsub3subNsub3subOsub3sub |
| 1, 2, 3-trihydroxypropane | glicerina |
| 1, 2, 3-trihydroxypropane | glicerol |
| 1, 2, 3-trihydroxypropane | E422 |
| 1, 3, 5-trimethylbenzene | mesitileno |
| vitamin B1 | tiamina |
| vitamin B1 | aneurina |
| zinc ethylene-1, 2-bis dithiocarbamate | zineb |
