| η (eta or hapto) in inorganic nomenclature |
| E, Z |
| early-downhill surface |
| eclipsed (eclipsing) |
| eclipsing conformation |
| eclipsing strain |
| ectohormone |
| eddy |
| eddy dispersion (diffusion) |
| educt |
| effective cadmium cut-off energy
in nuclear analytical chemistry |
| effective charge |
| effective chimney height (stack height) |
| effective half life |
| effectively infinite thickness
in flame spectroscopy |
| effective molarity (effective concentration) |
| effectiveness |
| effective theoretical plate number
of a chromatographic column |
| effective thermal cross-section |
| effective thickness of diffusion layer |
| effector |
efficiency,  of a stepquantity |
| efficiency of a counter |
| efficiency of atomization
in analytical flame spectroscopy |
efficiency of nebulization,  in flame spectrometryquantity |
| efficiency spectrum |
| efflorescence |
| effluent |
| effluent in chromatography |
| eicosanoids |
| eighteen-electron rule |
| einsteinunit |
| Einstein equation |
| elastic collision |
| elastic scattering in reaction dynamics |
| elastic scattering in spectrochemistry |
| electrical arc |
| electrical double-layer |
| electrical hygrometer |
| electric capacitance |
electric charge,  quantity |
electric coherence length,  in thin filmsquantity |
electric conductance,  quantity |
| electric conductivity |
electric current,  quantity |
electric current density,  quantity |
electric dipole moment,  quantity |
electric displacement,  quantity |
electric field (strength),  quantity |
electric mobility,  ,  quantity |
electric polarizability,  quantity |
electric potential difference,
of a galvanic cell |
electric potential,  quantity |
electric resistance,  quantity |
| electric resistivity |
| electric sector in mass spectrometry |
| electrified interphase |
| electroactive substance |
| electrocapillarity |
| electrocapillary equation |
| electrochemical detector in gas chromatography |
| electrochemical method of detection in analysis |
| electrochemical potential |
| electrochemiluminescence |
| electrochromic effect |
| electrocyclic reaction |
| electrodecantation (or electrophoresis convection) |
electrode current density,  quantity |
| electrode memory |
| electrodeposition |
electrode potential,  quantity |
| electrode process |
| electrode reaction |
| electrode reaction rate constants |
| electro-dialysis |
| electrodialysissuperseded |
| electro-endosmosis |
| electrofuge |
| electrogenerated chemiluminescence (ECL) |
| electrographite |
electrokinetic potential,  quantity |
| electroluminescence |
| electrolytic hygrometer |
| electromeric effect |
| electromigration |
electromotive force,  quantity |
| electron |
| electron acceptor |
electron affinity,  |
| electronation |
| electron attachment |
| electron capture |
| electron capture detector in gas chromatography |
| electron charge |
| electron configuration |
| electron correlation |
| electron-deficient bond |
| electron density |
| electron detachment |
| electron donor |
| electron-donor-acceptor complex |
| electronegativity |
| electron energy in mass spectrometry |
| electroneutrality principle |
| electron exchange excitation transfer |
| electronically excited state |
| electronic configuration |
| electronic effect of substituents: symbols and signs |
| electronic energy migration (or hopping) |
| electron impact ionization in mass spectrometry |
| electron ionization in mass spectrometry |
| electron jump |
| electron kinetic energy |
| electron microscopy |
| electron-pair acceptor |
| electron-pair donor |
| electron paramagnetic resonance (EPR) |
| electron probe microanalysis (EPMA) |
| electron probe X-ray microanalysis (EPXMA) |
| electron rest massconstant |
| electron spectroscopy for chemical analysis (ESCA) |
| electron stopping power
in X-ray emission spectroscopy |
| electron transfer |
| electron-transfer catalysis |
| electron transfer photosensitization |
| electronvoltunit |
electron work function,  |
| electro-osmosis (1996, 68, 1488) |
| electro-osmosis (1972, 31, 620)superseded |
electro-osmotic hold-up time,  in capillary electromigrationquantity |
electro-osmotic mobility,
 or
in capillary electromigrationquantity |
| electro-osmotic pressure |
| electro-osmotic velocity |
| electro-osmotic volume flow |
| electrophile (electrophilic) |
| electrophilicity |
| electrophoresis |
| electrophoresis convection |
electrophoretic mobility,  quantity |
electrophoretic velocity,  |
| electrophotography |
| electrosmosis |
| electrostatic filter |
| electrostatic precipitator |
| electrothermal atomizer
in spectrochemical analysis |
| electroviscous effects |
| element |
| elementary chargeconstant |
| elementary entity |
| elementary particle in nuclear chemistry |
| elementary reaction |
| element effect |
| element of chirality |
| elimination |
| eluate |
| eluent |
| elute |
| elution |
| elution band in chromatography |
| elution chromatography |
| elution curve |
| elutriation |
| emanation thermal analysis |
| embryo |
| emission |
| emission in atmospheric chemistry |
| emission control equipment
in atmospheric chemistry |
| emission flux in atmospheric chemistry |
| emission spectrum |
emittance,  quantity |
| empirical formula |
| emulsifier |
| emulsion |
| enamines |
| enantioconvergence |
| enantioenriched |
| enantiomer |
| enantiomer excess (enantiomeric excess) |
| enantiomerically enriched (enantioenriched) |
| enantiomerically pure (enantiopure) |
| enantiomeric groups |
| enantiomeric purity |
| enantiomeric ratio |
| enantiomeric units in a polymer |
| enantiomerization |
| enantiomerism |
| enantiomorph |
| enantiomorphous structures in polymers |
| enantiopure |
| enantioselectivity |
| enantiotopic |
| enantiotropic mesophase |
| enantiotropic transition |
| encapsulation in catalysis |
| encounter |
| encounter complex |
| encounter control |
| encounter-controlled rate |
| encounter pair |
| endergonic (or endoergic) reaction |
| end-group |
| endocytosis |
| endoenzymes |
| endo, exo, syn, anti |
| endothermic reaction |
| end-point |
| end-to-end distance in polymers |
| end-to-end vector in polymers |
| ene reaction |
| energized species |
energy,  quantity |
| energy of a radiation |
| energy dispersion in emission spectrometry |
| energy dispersive detector |
| energy dispersive X-ray fluorescence analysis |
| energy flux density |
| energy migration |
| energy of activation |
| energy of activation of an electrode reaction |
| energy pooling |
| energy profile |
| energy resolution in radiochemistry |
energy storage efficiency,  quantity |
| energy threshold in radiochemistry |
| energy transfer in photochemistry |
| energy transfer plot in photochemistry |
| energy yield of luminescence |
| enforced concerted mechanism |
| enhanced phosphorescence analysis
in luminescence spectroscopy |
| enhancement reaction in analytical chemistry |
| enhancer |
| enolates |
| enols |
| enophile |
| enoses |
enrichment factor,  in liquid-liquid distributionquantity |
| enrichment, isotopic |
| ent |
| entatic state |
| entering group |
| enthalpimetric analysis |
| enthalpimetric flow injection analysis |
| enthalpimetric titration |
| enthalpimetry |
| enthalpogram |
enthalpy,  quantity |
enthalpy of activation,
quantity |
| enthalpy of immersion |
| enthalpy of wetting |
| entitic |
| entitic quantity |
| entrainment in atmospheric chemistry |
| entrance channel |
entropy,  quantity |
entropy of activation,  quantity |
| entropy unitunit |
| envelope conformation |
| environmental (or ambient) monitoring |
| environmental stress cracking |
| enzyme activator |
| enzyme activity |
| enzyme induction in general chemistry |
| enzyme induction in medicinal chemistry |
| enzyme inhibitor |
| enzyme repression |
| enzymes |
| enzyme substrate electrode |
| enzyme thermistor |
| enzymic decomposition |
| epicadmium neutrons |
| epigenetic |
| epihalohydrins |
| epimerization |
| epimers |
| epi-phase |
| episulfonium ions |
| epithermal neutrons |
| epitope |
| epoxides |
| epoxy compounds |
| equatorial |
| equilibration |
| equilibrium constant |
| equilibrium control |
| equilibrium dialysate |
| equilibrium distance in a molecule |
| equilibrium film |
| equilibrium isotope effect |
| equilibrium reaction |
| equilibrium sedimentation |
| equilibrium solution |
| equivalence point |
| equivalence postulate in polymer chemistry |
| equivalent chain in polymers |
| equivalent diameter |
| equivalent entity |
| ergunit |
| error of measurement |
| erythro structures in a polymer |
| erythro, threo |
| ESCA |
| escape depth (for surface analysis techniques) |
| Esin and Markov coefficient |
| esters |
| ethers |
 -value |
| euatmotic reaction |
| eupeptide bond |
| eutectic reaction |
| evaluation function |
| evaporation |
| even-electron ion |
| evolved gas analysis (EGA) |
| evolved gas detection (EGD) |
| Ewens–Bassett number |
| exaSI unit prefix |
| excess acidity |
| excess mass (at a solid/liquid interface) |
| excess Rayleigh ratio |
| excess volume (at a solid/liquid interface) |
| exchange current of an electrode reaction |
| exchange extraction |
| exchange-inversion transition |
| exchange labelling |
| excimer |
| excimer laser |
| excimer-luminescence in luminescence quenching |
| excipient in toxicology |
| exciplex |
| exciplex-luminescence in luminescence quenching |
| excitation |
| excitation-emission spectrum |
| excitation energy |
| excitation energy in in situ microanalysis |
| excitation level in X-ray spectroscopy |
| excitation spectrum |
| excitation transfer |
| excited state |
| exciton |
| excluded volume of a macromolecule in polymers |
| excluded volume of a segment in polymers |
| exclusion chromatography |
| exergonic (exoergic) reaction |
| exfoliated graphite |
| exitance |
| exit channel |
| exo |
| exoenzymes |
| exon |
| exothermic reaction |
| expansion factor in polymers |
| expectation value |
| expected value |
| experimental perturbational calculation |
| explosivity limits (explosion limits) |
| exponential decay |
| exposure |
| exposure in medicinal chemistry |
| exposure in nuclear chemistry |
| expression in biotechnology |
| extended-chain crystal in polymers |
| extended Hammett equation |
| extended X-ray absorption fine structure (EXAFS) |
| extensive quantity |
| extent of an interface (surface) |
extent of reaction,  quantity |
| external compensation |
| external heavy atom effect |
| external ion-pair return |
| external ion return |
| external photoelectric effect |
| external return |
| external standard in chromatography |
| external surface |
| exterplex |
| extinction |
| extinction coefficient |
| extra-column volume in chromatography |
| extract (noun) |
| extract (verb) |
| extractability in solvent extraction |
| extractant |
| extracting agent |
| extraction |
| extraction in process liquid-liquid distribution |
| extraction coefficient |
| extraction (equilibrium) constant |
extraction factor,  quantity |
| extraction fractionation of polymers |
| extraction isotherm |
| extraction process in catalysis |
| extrapolated range in radiochemistry |
| extremophiles |
| extrusion transformation |
