COMPOUNDS THAT FORM PEROXIDES DURING STORAGE
Three Months Peroxide Hazard Generated During Storage
| Divinyl acetylene | Sodium amide |
| Isopropyl ether | Vinyliden chloride |
| Potassium metal |
Twelve Months Peroxide Hazard
| Acetal | Methylcyclopentane |
| Cumene | Methyl acetylene (Propyne) |
| Cyclohexene | Methyl isobutyl ketone |
| Diacetylene | Tetrahydrofuran |
| Dicyclopentadiene | Tetrahydornapthalene (Tetralin) |
| Dioxane | Vinyl ethers |
| Ethyl ether | |
| Ethylene glycol dimethyl ether (glyme) |
Twelve Months Hazard Due to Peroxide Formation or Initiation of Spontaneous Polymerization *
| Acrylic acid | Tetrafluoroethylene |
| Acrylonitrile | Vinyl acetate |
| Butadiene | Vinyl acetylene |
| Chloroprene | Vinyl chloride |
| Chlorotrifluoroethylene | Vinyl pyridine |
| Styrene |
Other Time-Sensitive Chemicals
| Chloroform (on contact with air) | Sodium azide (on contact with metals) |
| Picric acid (when dry) | Picrylsulfonic acid (when dry) |
| Picryl Chloride (when dry) |
* |
When stored as a liquid, the peroxide forming potential of the Group 3 chemicals increases and certain of these monomers should then be considered as Group 1 compounds. (especially butadiene, chloroprene, and tetrafluoroethylene) |
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