Click on a letter to see an explanation of technical terms beginning with that letter.
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Definitions in this glossary have been compiled based on DuPont's experience and technical expertise in protective apparel as well as a number of external sources, including: "Glossary of terms and definitions by the European Committee for Standardisation."
|E89||DuPont internal reference number for certain types of NOMEX® used as heat barrier or backing for moisture barriers.|
|Ecru||Undyed or natural colour.|
|Elastomer||The class of synthetic polymers that have the stretch and recovery properties of rubber.|
|Electrostatic charging||Accumulation of positive or negative charges which can be build up on a fabric by rubbing of the fabric against the skin or undergarment. The charge dissipation via a tiny spark from a coverall to a surface of opposite electrical potential in a flammable environment can cause an explosion.|
|Elongation||Stretching under load.|
|EN-performance classes of chemical protective clothing||A classification system for the fabric mechanical or barrier properties and the whole suit : maximum of 6 performance classes, where class 1 represents the minimum requirement. It has been developed to help users differentiating performances of the fabric or the whole suit.|
|Endothermic reaction||Chemical reactions that must absorb energy in order to proceed.|
|European Norm (EN)||A European Community (EC) standard that carries with it the obligation to be implemented at a national level and having priority over any conflicting national standard in EC member nations. Prior to final ratification, European Norms are generally known as prENs (Preliminary European Norms).|
|Evaporation||It is the process whereby atoms or molecules in a liquid state (or solid state if the substance sublimes) gain sufficient energy to enter the gaseous state.|
|Exothermic reaction||This term describes a chemical reaction, which releases energy in the form of heat, light, or sound.|
|Explosive||A chemical substance which undergoes a rapid chemical change (with the production of gas) on being heated or struck.|
|Exposure||Subjecting someone to a toxic substance or harmful physical agent .|