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EC number: 903-919-3 | CAS number: -
The following results were determined for the test item reaction mass of 2,2'-oxybisbutane (DSBE), DIPE, SBA and 2-methylpropan-2-ol (TBA) 3h EC50 = 2400 mg/L (95% confid. interv.: 1000 - 7300 mg/L)
The EC20 value, EC50 value and the NOEC for the inhibition of the respiration in activated sludge of reaction mass of 2,2'-oxybisbutane (DSBE), DIPE, SBA and 2-methylpropan-2-ol (TBA) was measured according to OECD 209, respectively EU C.11 guideline under GLP. Following results were obtained:
3h NOEC = 32 mg/L 3h EC20 = 400 mg/L (95% confid. interv.: 120 - 970 mg/L)
3h EC50 = 2400 mg/L (95% confid. interv.: 1000 - 7300 mg/L)
These values are not used for classification and labelling since no endpoint exists for toxicity to microorganisms. In the risk assessment,
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