Dispense all solvents in the fume hood. Do not store flammable liquids on the floor. Store and use in the smallest amounts possible. 10.7.3 Supplemental Safety Rules for Explosives, Highly Reactive Chemicals and Oxidizers Unstable or reactive chemicals in their pure state or as commercially produced, will vigorously polymerize, decompose, condense or will become self-reactive under conditions of shock, pressure, or temperature. Peroxides can be formed from some common laboratory chemicals after exposure to air.
Peroxides can be violently explosive in concentrated form or as solids.
See Table B for a list of peroxide forming chemicals used in the biology department. Organic peroxides are another class of compounds that present an explosion hazard. Compounds containing nitro groups can be highly reactive, especially if other components such as halogens are present. Dispose of peroxide forming chemicals within the period specified in Table B after opening the container. Consult the MSDS or appropriate references, and follow its guidelines.