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Ontology Browser
Term:
Parent Terms Term With Siblings Child Terms
chemical role +     
acceptor +   
acid +   
antioxidant +   
base +   
buffer +   
catalyst +   
chain carrier +   
corrosion inhibitor +  
crystallisation adjutant +  
deaminating agent 
donor +   
emulsifier +   
environmental contaminant +   
explosive +   
film-forming compound +  
fluorescence quencher +  
fuel additive +   
greenhouse gas +   
impurity +  
A chemical role played by any unwanted chemical substance inside a confined amount of liquid, gas, or solid, which differs from the chemical composition of the material or compound. For example, an impurity can be an undesired by-product of a chemical reaction or manufacturing process, a drug contaminant, or can be created upon degradation during storage.
ligand +   
NMR chemical shift reference compound +   
oxidising agent +   
photochemical role +   
polymerisation monomer +   
reaction intermediate +   
reactive oxygen species generator +   
reducing agent +   
solvent +   
thermal degradation product +   

Synonyms
Related Synonyms: contaminant ;   contaminants ;   impurities
Xrefs: Wikipedia:Impurity

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