This list below is extensive, but it is not all-inclusive. Chemicals with similar names to the ones on this list should be given consideration when assessing the potential for peroxide formation.

The peroxide list does not address the broad range of chemical-specific hazards and properties that are associated with the individual chemicals. For instance, 2-Butanol, diethyl ether, and tetrahydrofuran, among many others, form explosive levels of peroxides on concentration. Furthermore, isopropyl ether, tetrafluoroethylene, and butadiene form explosive levels of peroxides without being concentrated. It should be clearly noted that some chemicals present much greater hazards than others with respect to the formation of peroxides.

Important Handling Practices:
All peroxidizable chemicals and other materials that may become unstable over time must be clearly dated upon receipt and upon opening. These chemicals should be tested regularly for peroxide formation in accordance with the manufacturer’s instructions or institutional guidelines. Chemicals must be disposed of within 12 months of receipt or by the manufacturer’s expiration date, whichever comes first. Any chemical that tests positive for peroxide formation or exceeds recommended storage duration should be promptly disposed of through Environmental Health & Safety (EHS) procedures.

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Acetal
Acetaldehyde
Acrolein
Acrylic Acid
Acrylonitrile
Allyl ether
Allyl ethyl
Allyl phenyl
n-Amyl ether
p-(n-Amyloxy
Benzyl alcohol
Benzyl n-butyl
Benzyl ether
Benzyl ethyl ether
Benzyl methyl ether
Benzyl 1-napthyl ether
1,2-Bis(2-chloroethoxy) ethane
Bis(2-ethoxyethyl) ether
Bis[2-(methoxyethoxy)ethyl] ether
Bis(2-chloroethyl) ether
Bis(2-ethoxyethyl) adipate
Bis(2-ethoxyethyl) phthalate
Bis(2-methoxyethyl) carbonate
Bis(2-methoxyethyl) ether
Bis(2-methoxyethyl) phthalate
Bis(2-methoxymethyl) adipate
Bis(2-n-butoxyethyl) phthalate
Bis(2-phenoxyethyl) ether
Bis(4-chlorobutyl) ether
2-Bromomethyl ethyl ether
b-Bromophenetole
o-Bromophenetole
p-Bromophenetole
3-Bromopropyl phenyl ether
Butadiene
1,3 Butadiyne
2-Butanol (a.k.a. Butyl alcohol)
Buten-3-yne
tert-Butyl ethyl ether
tert-Butyl methyl ether
n-Butyl phenyl ether
n-Butyl vinyl ether
Chloroacetaldehyde diethylacetal
2-Chlorobutadiene (a.k.a. Chloroprene)
1-(2-Chloroethoxy)-2-phenoxyethane
Chloroethylene
Chloromethyl methyl ether
b-Chlorophenetole
o-Chlorophenetole
p-Chlorophenetole
Chloroprene (a.k.a. 2-Chlorobutadiene)
Chlorotrifluoroethylene
Cumene
Cyclohexanol
2-Cyclohexen-1-ol
Cyclohexene
Cyclooctene
Cyclopropyl methyl ether
Decahydronaphthalene
Diacetylene
Diallyl ether
p-Di-n-butoxybenzene
1,2-Dibenzyloxyethane
p-Dibenzyoxybenzene
Dibenzocyclopentadiene
1,2-Dichloroethyl ethyl ether
2,4-Dichlorophenetole
Dicyclopentadiene
Diethoxymethane
2,2-Diethoxypropane
Diethyl ether
Diethylene glycol dimethyl ether (diglyme)
Diethyl ethoxymethylenemalonate
Diethyl fumarate
Diethyl acetal
Diethylketene
m,o,p-Diethoxybenzene
1,2-Diethoxyethane
9,10-Dihydroanthracene Indene
Dimethoxymethane
1,1-Dimethoxyethane
Dimethylketene
3,3-Dimethoxypropene
2,4-Dinitrophenetole
Dioxanes
1,3-Dioxepane
Di(1-propynyl) ether
Di(2-propynyl) ether
Di-n-propoxymethane
Divinylacetylene
1,2-Epoxy-3-isopropoxypropane
1,2-Epoxy-3-phenoxypropane
p-Ethoxyacetophenone
1-(2-Ethoxyethoxy) ethyl acetate
2-Ethoxyethyl acetate
(2-Ethoxyethyl)-o-benzoyl benzoate
1-Ethoxynaphthalene
o,p-Ehtoxyphenyl isocyanate
1-Ethoxy-2-propyne
3-Ethoxyopropionitrile
2-Ethylacrylaldehyde oxime
2-Ethylbutanol
Ethyl ether
Ethylene glycol dimethyl ether
Ethyl b-ethoxypropionate
2-Ethylhexanal
Ethyl vinyl ether
Furan
4-Heptanol
2,5-Hexadiyn-1-ol
4,5-Hexadien-2-yn-1-ol
2-Hexanol
n-Hexyl ether
o,p-Iodophenetole
Isoamyl benzyl ether
Isoamyl ether
Isobutyl vinyl ether
Isophorone
b-Isopropoxypropionitrile
Isopropyl ether
Isopropyl 2,4,5-trichlorophenoxyacetate
Limonene
1,5-p-Methadiene
Methyl acetylene
Methyl p-(n-amyloxy) benzoate
3-Methyl-1-butanol
Methylcyclopentane
Methyl isobutyl ketone
Methyl Methacrylate
4-Methyl-2-pentanol
4-Methyl-2-pentanone
n-Methylphenetole
2-Methyltetrahydrofuran
3-Methoxy 1-butyl acetate
2-Methoxyethanol
3-Methoxyethyl acetate
2-Methoxyethyl vinyl ether
Methoxy-1,3,5,7-cyclooctatetraene
b-Methoxypropionitrile
m-Nitrophenetole
1-Octene
Oxybis(2-ethyl acetate)
Oxybis(2-ethyl benzoate)
b,b-Oxydipropionitrile
2-Pentanol
1-Pentene
4-Penten-1-ol
1-Phenylethanol
2-Phenylethanol
Phenoxyacetyl chloride
a-Pehnoxypropionyl chloride
Phenyl o-propyl ether
p-Phenylphenetone
Potassium metal
2-Propanol (a.k.a. Isopropyl alcohol)
n-Propyl ether
n-Propyl isopropyl ether
Sodium 8,11,14-eicosatetraenoate
Sodium ethoxyacetylide
Sodium amide
Styrene
Tetrafluoroethylene
Tetrahydrofuran
Tetrahydropyran
Tetrahydronaphthalene
Triethylene glycol diacetate
Triethylene glycol dipropionate
1,3,3-Trimethoxypropene
1,1,2,3-Tetrachloro-1,3-butadiene
Vinyl acetate
Vinyl acetylene
Vinyl chloride
4-Vinyl cyclohexene
Vinyl ethers
Vinyl pyridine
Vinylene carbonate
Vinylidene chloride
Vinyladiene chloride
Other secondary alcohols
Butadiene (liquid monomer)Isopropyl etherSodium amide (sodamide)
Chloroprene (liquid monomer)Potassium amideTetrafluoroethylene (liquid monomer)
Divinyl etherPotassium metalVinylidene chloride
AcetalDicyclopentadieneMethyl isobutyl ketone
Acetaldehyde

Diethyl ether (ether)

 

4-Methyl-2-pentanol
Benzyl alcoholDioxanes2-Pentanol
2-Butanol

Ethylene glycol ether acetates (glyme)

 

4-Penten-1-ol
CumeneFuran1-Phenylethanol
Cyclohexanol4-HeptanolTetrahydrofuran (THF)
Cyclohexene2-Hexanol

Tetrahydronaphthalene (tetralin)

 

2-Cyclohexen-1-olMethylacetylene (gas)Vinyl ethers
Decahydronaphthalene (decalin)3-Methyl-1-butanol

Other secondary alcohols

 

Diacetylene (butadine, gas)Methyl cyclopentane 
Acrylic acid

Styrene

 

AcrylonitrileTetrafluoroethylene (gas)
Butadiene (gas)

Vinyl acetate

 

Chlorobutadiene

Vinylacetylene (gas)

 

Chloroprene

 

Vinyladiene chloride

Chlorotrifluoroethylene (gas)Vinyl chloride (gas)

Methyl methacrylate

 

Vinyl pyridine

 

AcroleinBenzyl-1-naphthyl etherBis(2-n-butoxyethyl) phthalaten-Butyl phenyl etherCycloocteneDiethyl ethoxymethylenemalonateDi-n-propoxymethane3-Ethoxypropionitrile2,5-Hexadiyn-1-ol

 

2-Methoxyethanol

b,b-OxydipropionitrileTetrahydropyran
Allyl ether1,2-Bis(2-chloroethoxyl)ethaneBis(2-phenoxyethyl) ethern-Butyl vinyl etherCyclopropyl methyl etherDiethyl fumarate1,2-Epoxy-3-isopropoxypropane2-Ethylacrylaldehyde oxime

Isoamyl benzyl ether

 

2-Methoxyethyl acetate

 

1-PenteneTriethylene glycol diacetate
Allyl ethyl etherBis(2-ethoxyethyl)etherBis(4-chlorobutyl) etherChloroacetaldehyde diethylacetal

Diallyl ether

 

Diethyl acetal1,2-Epoxy-3-phenoxypropane2-Ethylbutanol

 

Isoamyl ether

 

3-Methoxybutyl acetate

Phenoxyacetyl chlorideTriethylene glycol dipropionate
Allyl phenyl etherBis(2-(methoxyethoxy)ethyl) etherBis(chloromethyl) ether2-Chlorobutadienep-Di-n-butoxybenzene

Diethylketene

 

p-EthoxyacetophenoneEthyl-b-ethoxypropionate

 

Isobutyl vinyl ether

2-Methoxyethyl vinyl ethera-Phenoxypropionyl chloride1,3,3-Trimethoxypropene
p-(n-Amyloxy)benzoyl chlorideBis(2-chloroethyl) ether2-Bromomethyl ethyl ether1-(2-Chloroethoxy)-2-phenoxyethane1,2-DibenzyloxyethaneDiethoxybenzene (m-,o-,p-)1-(2-Ethoxyethoxy)ethyl acetateEthylene glycol monomethyl ether

Isophorone

 

 

Methoxy-1,3,5,7-cyclooctatetraene

Phenyl-o-propyl ether1,1,2,3-Tetrachloro-1,3-butadiene
n-Amyl etherBis(2-ethoxyethyl) adipatebeta-BromophenetoleChloroethylenep-Dibenzyloxybenzene1,2-Diethoxyethane2-Ethoxyethyl acetate2-Ethylhexanal

b-Isopropoxypropionitrile

 

b-Methoxypropionitrilep-Phenylphenetone

 

4-Vinyl cyclohexene

Benzyl n-butyl etherBis(2-methoxyethyl) carbonateo-BromophenetoleChloromethyl methyl ether1,2-Dichloroethyl ethyl etherDimethoxymethane(2-Ethoxyethyl)-a-benzoyl benzoateEthyl vinyl ether

Isopropyl-2,4,5-trichlorophenoxy acetate

 

m-Nitrophenetolen-Propyl etherVinylene carbonate
Benzyl etherBis(2-methoxyethyl) etherp-Bromophenetolebeta-Chlorophenetole2,4-Dichlorophenetole1,1-Dimethoxyethane1-Ethoxynaphthalene

4,5-Hexadien-2-yn-1-ol

 

n-Methylphenetole

 

1-Octenen-Propyl isopropyl ether 
Benzyl ethyl etherBis(2-methoxyethyl) phthalate3-Bromopropyl phenyl ethero-ChlorophenolDiethoxymethaneDi(1-propynl) ethero,p-Ethoxyphenyl isocyanate

n-Hexyl ether

 

2-Methyltetrahydrofuran

 

Oxybis(2-ethyl acetate)

 

Sodium 8-11-14-eicosatetraenoate

 
Benzyl methyl etherBis(2-methoxymethyl) adipatetert-Butyl methyl etherp-Chlorophenetole2,2-DiethoxypropaneDi(2-propynl) ether1-Ethoxy-2-propyne

o.p-Iodophenetole

 

3-Methoxy-1-butyl acetate

 

Oxybis(2-ethyl benzoate)

 

Sodium ethoxyacetylide

 

 

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