|
|
Glossary |
| Search term: |
| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z |
| Term | Definition | Article | Siehe auch |
|---|---|---|---|
| EATOS: | Environmental Assessment Tool for Organic Syntheses. Java program for integrated evaluation of organic chemical syntheses based on the educts and products (including by-products and waste). The program was developed at the University of Oldenburg, Germany. |  |
|
| EC50: Wikipedia: EC50 |
(Effective Concentration) The concentration of a substance in a surrounding medium [g/l in water], at which 50 percent of the tested aquatic organisms show a difined effect level (e.g. reproduction, O2 produxtion). Analogous definitions apply to EC10, EC5, etc. with corresponding effect levels. | LC50 | |
| ECD: Wikipedia: ECD |
Electron capture detector for gas chromatography (ionisation by radioactive 63Ni). | ||
| educt: Wikipedia: educt |
Starting material of a chemical synthesis, sometimes also denoted as substrate. The NOP adopts the definition of the Beilstein database that every starting material that contributes at least one C-atom to the product is called an educt. | reagent | |
| effect factor: | The effect factor is a dimensionless number that is determined according to a method outlined in the German Technical Rules for Hazardous Substances (TRGS) 600. This method uses as input the known R phrases and the German threshold limit values. It also provides a classification of substances with not fully determined or unknown dangerous properties. | |
|
| EINECS-No.: Wikipedia: EINECS-No. |
Number of a chemical substance in the European Inventory of Existing Chemical Substances (EINECS), which lists all so-called old chemicals. | ||
| endocrine disruptor: Wikipedia: endocrine disruptor |
Chemical substance that can affect the hormone balance in higher organisms. Macroscopic effects may be e.g. disruption of the reproductive behaviour, increased growth or similar effects. | ||
| endothermal reaction: | Chemical reaction that absorbs heat from the environment (energetic effect of the reaction). | heat of reaction, exothermic reaction | |
| energy efficiency: Wikipedia: energy efficiency |
Mass of the purified product per kJ of invested energy. The energy efficiency of a synthesis is strongly dependent on the equipment used, the experimentalist, and the preparation size. | |
mass efficiency |
| energy-induced methane equivalents: | This key value describes the ratio of the amount of methane that must be burnt in a model energy plant to generate enough energy to perform a specific reaction to the mass of the generated product. | |
energy efficiency |
| enthalpy: Wikipedia: enthalpy |
Thermodynamic state function. The difference of the enthalpies of the reaction products and the educts equals the heat reaction at constant pressure. | heat of reaction | |
| entropy: Wikipedia: entropy |
Thermodynamic state function characterizing the disorder of the system. | ||
| exothermic reaction: Wikipedia: exothermic reaction |
Chemical reaction which liberates energy that is passed to the environment. | heat of reaction, endothermal reaction | |
| explosion limits: Wikipedia: explosion limits |
The lowest and the highest concentration of a gas in air, that forms an explosive mixture. Usually given in volume percent. | flash point, autoignition temperature |