Certain solvents and chemical intermediates,
particularly, but not only ethers and unsaturated compounds,
may form peroxides during storage. These peroxides
may present a violent explosion hazard when the chemicals are
evaporated. When peroxide formation is likely because of
chemical type or length of storage time, analyze the material
for peroxides (see Test Method E 299). If they exist in
hazardous concentrations, take appropriate precautions such as
destroying the peroxides before evaporation, shielding, or
disposal of the sample and not running the test.
6. Procedure