A.  Chemicals that form explosive levels of peroxides without concentration 

Butadiene	Divinylacetylene	Tetrafluoroethylene	Vinylidene chloride
Chloroprene	Isopropyl ether	Potassium metal	Potassium amide
Sodium amide

Peroxide hazard after prolonged storage. Test for peroxide formation or discard after 3 months.

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B.  Chemicals that form explosive levels of peroxides on concentration e.g. Distillation of Diethyl ether

Acetal	Cyclopentene	2-Hexanol	2-Phenylethanol
Acetaldehyde	Decahydronaphthalene	Methylacetylene	2-Propanol
Benzyl alcohol	Diacetylene	3-Methyl-1-butanol	Tetrahydrofuran
2-Butanol	Dicyclopentadiene	Methylcyclopentane	Tetrahydronaphthalene
Cumen	Diethyl ether	Methyl isobutyl ketone	Vinyl ethers
Cyclohexane	Diethylene glycol dimethyl ether	4-Methyl-2-pentanol	Other secondary alcohols
Cyclohexanol	Dioxanes	2-Pentanol	2-Cyclohexen-1-ol
Ethylene glycol dimethyl ether	4-Penten-1-ol	Cyclohexene	4-Heptanol
1-Phenylethanol

Test for peroxide formation or discard after 1 year

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C. Chemicals that may autopolymerize as a result of peroxide accumulation

Acrylic acid	Chlorotrifluoroethylene	Vinyl acetate	Vinyladiene chloride
Acrylonitrile	Methyl methacrylate	Vinylacetylene	Butadiene
Styrene	Vinyl chloride	Chlorobutadiene	Tetrafluoroethylene
Vinylpyridine

Tests for peroxide formation or discard after 1 year.

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References:

1. Review of Safety Guidelines for Peroxidizable Organic Chemicals, Chemical Health and Safety, Sept/Oct: American Chemical Society, 1996
2. Jackson, J. Chem. Ed., 1970