Registration Dossier
Registration Dossier
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EC number: 939-688-0 | CAS number: -
Endpoint summary
Administrative data
Description of key information
Additional information
The ready biodegradation of C1618FA-TEPA-compound (ca. 90% a.i.) was investigated in a study according to EU Method C.4-C (1992) and OECD guideline 301 B (1992), CO2 evolution test over a period of 28 days and using an inoculum obtained from activated sludge from a predominantly domestic sewage treatment plant. The biodegradation rate was determined by measurement of carbon dioxide evolution.
Inoculum blank, procedural/functional control with the reference substance Sodium benzoate and a toxicity control with 27.1 mg/L test item and 25.7 mg/L reference item Sodium benzoate were performed.
The reference item degraded normally (63% by within 14 days). By the end of the test, the reference item was degraded to an average of 72%.
At the end of the 28-day exposure period, the mean extent of biodegradation of the test item was 9%. No significant biodegradation of C1618FA-TEPA-compound occurred under the test conditions within 28 days and the pass level for ready biodegradability of at least 60% degradation 10-day window within the 28-day period of the test was not reached.
The extent of biodegradation in the toxicity control showed a similar course over the 28-day exposure period when compared to the procedure control containing the reference item, only. Within 14 days of exposure, the extent of biodegradation was 35%. Thus, according to the test guidelines, the test item had no inhibitory effect on activated sludge microorganisms at the tested concentration of 27 mg/L, as the biodegradation in the toxicity control was higher than 25% within 14 days of incubation.
In accordance with REACH regulation Annex IX, 9.2.1.2, 9.2.1.3 and 9.2.1.4, column 2 simulation testing in water, soil and sediment is not required as the water solubility of the substance is low (<0.15 mg/L) and the substance has a low potential for adsorption based on a log Kow of <0.3.
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