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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

The ready biodegradation of reaction mass of 2,2'-oxybisbutane (DSBE), DIPE, SBA and 2-methylpropan-2-ol (TBA) was tested according to ISO 14593:2005 under GLP. No significant degradation (14%) of the test item was observed after 28 days. Reaction mass of 2,2'-oxybisbutane (DSBE), DIPE, SBA and 2-methylpropan-2-ol (TBA) is not readily biodegradable.

This finding is corroborated by the degradabilities of the main constituents of reaction mass of 2,2'-oxybisbutane (DSBE), DIPE, SBA and 2 -methylpropan-2 -ol (TBA): While SBA, which, however, makes up only approximately 2.7% of the reaction mass, was found to be readily biodegradable (3), the components DSBE (1), DIPE (2), and TBA (4) were not readily biodegradable. However, TBA may be inherently biodegradable.


(1) HIGH PRODUCTION VOLUME (HPV) CHEMICAL CHALLENGE PROGRAM TEST PLAN For sec-Butyl Ether CAS NO. 6863-58-7, Prepared by: ExxonMobil Chemical Company November 28,2006

(2) Stone CM, Watkinson RJ (1983) ISOPROPYL ETHER: AN ASSESSMENT OF READY BIODEGRADABILITY, Shell biosciences Laboratory, Sittingbourne Research Centre, Sittingbourne, Kent, U.K., Report No. SBGR.83.428

(3) OECD SIDS Dossier for Butan-2 -ol, CAS No. 78 -92 -2, ExxonMobil Biomedical Sciences Inc., 09.01.2002

(4) Robust Summaries for t-Butanol, CAS Number 75 -65 -O USEPA HPV Challenge Program Submission April 10, 2002