LIST A: Severe Peroxide Hazard on Storage with Exposure to Air
Discard within 3 months
- diisopropyl ether (isopropyl ether)
- divinylacetylene (DVA)
- potassium metal
- potassium amide
- sodium amide
- vinylidene chloride (1,1-dichloroethylene)
LIST B: Peroxide Hazard on Concentration; Do Not Distill or Evaporate Without First Testing for the Presence of Peroxides
Discard or test for peroxides within 6 months
- acetaldehyde diethyl acetal
- cumene (isopropylbenzene)
- cyclohexene
- cyclopentene
- decalin (decahydronapthylene)
- diacetylene (butadiene)
- dicyclopentadiene
- diethyl ether (ether)
- diethylene glycol dimethyl ether (diglyme)
- dioxane
- ethylene glycol dimethyl ether (glyme)
- ethylene glycol ether acetate
- ethylene glycol monoethers (cellusolves)
- furan
- methylacetylene
- methylcyclopentane
- methyl isobutyl ketone
- tetrahydrofuran (THF)
- tetralin (tetrahyronaphthalene)
- vinyl ethers
LIST C: Hazard of Rapid Polymerization Initiated by Internally Formed Peroxides
a. normal liquids: Discard or test for peroxides after 6 months
- chloroprene (2-chloro-1,3-butadiene)
- styrene
- vinyl acetate
- vinylpyridine
b. normal gases: Discard after 12 months
- butadiene
- tetrafluoroethylene (TFE)
- vinylacetylene (MVA)
- vinyl chloride
From Prudent Practices for Disposal of Chemicals from Laboratories