The presence of certain functional groups is considered an indicator of reactivity. This is the simplest possible reactivity screening method and serves as a guideline for further analysis. For example, chemicals containing the following functional groups can be considered potentially reactive:
-NO2 : organic nitro compounds
-O-O-, -O-OH : organic/inorganic peroxide and hydroperoxide compounds
-C?C- : Triple bonded carbon atoms as in acetylene and acetylenic compounds
A few of the reactive groups are summarized in table below.
|Groups Containing Carbon||Groups Containing Oxygen||Groups Containing Nitrogen|
|Acetylenic compounds||Peroxyacids and salts||Fluorodinitromethyl compounds|
|Metal acetylides||Peroxides||N-metal derivatives|
|Nitroso and Nitro-compounds||Ester monomers||Tetrazole|
|Acyl or alkyl nitriles||Amide monomers||Azides|
|Epoxides||–||Hydroxylamine and salts|
|Metal fulminates or oximates||–||N-haloamides|
|Alkene monomers, -(CH-CH)n-||–||–|
To learn more about evaluating reactive chemical hazards, please continue to follow this series.