| Subject | English | Spanish |
| agric., chem. | ammonium hydrate | amoníaco en disolución acuosa |
| agric., chem. | ammonium hydrate | hidrato de amoníaco |
| agric., chem. | ammonium hydrate | solución amoniacal |
| agric., chem. | ammonium hydrate | agua amoniacal |
| industr., construct., chem. | cerium hydrate | óxido de cerio hidratado |
| health., chem. | chloral hydrate | hidrato de cloral |
| chem. | chloral hydrate | hidrato de clorai |
| chem. | clathrate hydrate | hidrato de gas |
| chem. | ferrous chelate of amino acids hydrate | quelato ferroso de aminoácidos hidratado |
| chem. | gas hydrate | hidrato de gas |
| chem. | hydrate alumina | hidrato de alúmina |
| chem. | hydrazine hydrate | hidrato de hidracina |
| chem. | hydrazine hydrate | hidrato de hidrazina |
| chem., construct. | lime hydrate | cal muerta |
| chem., construct. | lime hydrate | cal hidratada |
| chem., construct. | lime hydrate | cal apagada |
| chem. | methane hydrate | hidrato de metano |
| chem. | piperazine hydrate | hidrato de piperacina |
| chem. | salt hydrate | sal hidratada |
| chem., el. | salt hydrates | sales hidratadas |
| chem. | terpin hydrate | hidrato de terpina |
| chem. | terpin hydrate | terpina |
| chem. | tetraboron disodium heptaoxide, hydrate | tetraboro disódico heptaóxido, hidrato |