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Physical & Chemical properties

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Reference
Endpoint:
additional physico-chemical information
Type of information:
other: Expert judgement
Adequacy of study:
weight of evidence
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Diisopropyl ether (CAS 108-20-3), which is present in the substance at ca. 30%, is officially classified as EUH019, may form explosive peroxides.
Endpoint investigated:
other: Formation of explosive peroxides
Conclusions:
Reaction mass of 2,2'-oxybisbutane (DSBE), DIPE, SBA and 2-methylpropan-2-ol (TBA) should be classified as EUH019, may form explosive peroxides.
Executive summary:

Reaction mass of 2,2'-oxybisbutane (DSBE), DIPE, SBA and 2-methylpropan-2-ol (TBA) is containing ca. 30% diisopropyl ether (CAS 108-20-3) which may form explosive peroxides. According to the work experience with reaction mass of 2,2'-oxybisbutane (DSBE), DIPE, SBA and 2-methylpropan-2-ol (TBA) and the official classification of DIPE, this substance should be classified with EUH019.

Description of key information

The reference “substance 2-propanol and 2-butanol production, distn. residues” does contain significant amounts of di-isopropyl ether (CAS 108-20-3) and other ethers, known to be capable of forming explosive peroxides. Accordingly, also the UVCB substance shall be assigned with supplemental hazard information EUH019 (May form explosive peroxides.).

Additional information