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Environmental fate & pathways

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The test item fatty acids, tall-oil, epoxidized, 2-ethylhexylesters (ETP) was investigated for their ready biodegradability in a manometric respirometry test over 28 days according to EU Commission Directive 92/69 EEC, C.4-D (1992) and OECD Guideline for Testing of Chemicals No. 301 F (1992).

The percent biodegradation of the test item was calculated based on the chemical oxygen demand (COD) of 2.72 mg O2/mg test item. The biochemical oxygen demand (BOD) of ETP in the test media significantly increased from Day 1 until test-termination after 28 days. A continuous degradation of the test item was determined over the whole test period. At the end of the 28-day test period, the mean biodegradation of ETP amounted to 70%. Thus, ETP was found to be readily biodegradable under the conditions of the test within 28 days.

Read across from ETP. Both substances are of similar structure, being long-chain esters with 2-ethyl hexanol. See section 13 for an attached document with a read across justification.

The substance Fatty acids, C12 -20 and C12 -20 -unsatd., 2 -ethylhexyl esters is therefore considered to be readily biodegradable.

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