Class A contains materials that readily form explosive
peroxides without evaporative concentration. They should be tested for the
presence of peroxides at least every three months after opening and if tested
positive should be disposed of
|
Butadiene |
|
Chlorobutadiene (Chloroprene) |
|
Divinyl acetylene |
|
Divinyl ether |
|
Isopropyl ether |
|
Potassium amide |
|
Potassium metal |
|
Sodium amide (sodamide) |
|
Tetrafluoroethylene |
|
Vinylidene chloride |
Class II contains materials that peroxidize
but become hazardous only on evaporative concentration. They should be tested
at least once a year after opening and disposed of if peroxides are detected.
|
Acetal |
4-Heptanol |
|
Acetaldehyde |
2-Hexanol |
|
Benzyl alcohol |
Methylacetylene |
|
2-Butanol |
3-Methyl-1-butanol |
|
Cumene |
Methylcyclopentane |
|
Cyclohexanol |
Methyl isobutyl ketone |
|
2-Cyclohexen-1-ol |
4-Methyl-2-pentanol |
|
Cyclohexene |
2-Pentanol |
|
Decahydronaphthalene |
4-Penten-1-ol |
|
Diacetylene |
1-Penylethanol |
|
Dicyclopentadiene |
2-Phenylethanol |
|
Diethyl ether |
2-Propanol |
|
Diethylene glycol |
Tetrahydrofuran |
|
Dimethyl ether (diglyme) |
Tetrahydronaphthalene |
|
Dioxanes |
Vinyl Ethers |
|
Ethylene glycol dimethyl ether (glyme) |
Other secondary alcohols |
Class I contains peroxidizable materials that also
can polymerize exothermically when initiated by the peroxide content. Testing
and disposal requirements are the same as for Class II.
|
Acrylic acid |
|
Acrylonitrile |
|
Butadiene |
|
Chloroprene |
|
Chlorotrifluoroethylene |
|
Methyl methacrylate |
|
Styrene |
|
Tetrafluoroethylene |
|
Vinyl acetate |
|
Vinylacetylene |
|
Vinyl chloride |
|
Vinylpyridine |
|
Vinyladiene chloride |
References:
Improving Safety in the Chemical Laboratory: A Practical Guide, J. Young, 1991.
Safety in the
Chemistry and Biochemistry Laboratory, A.
Picot and P. Grenouillet, 1995.