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Environmental fate & pathways

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There is no ready biodegradability data available for EPO. A read across approach was conducted with a ready biodegradability study from ESBO (EC No. 232-391-0).

Soybean oil, epoxidised is considered to be readily biodegradable. This was proven in a study conducted by Dr. A.V. Schulthess in 1988 using

OECD guideline 301B.

A ready biodegradability test was conducted on TK 11278(otherwise known as Reoplast 39 or epoxidised soybean oil)using bacteria from a sewage treatment plant. Aniline was used as a reference substance.

After 28 days:

The biodegradation calculated as percentage of measured amount of CO2 over the theory was:

10 mg test substance/L = 79 % in 28 days

20 mg test substance/L = 92 % in 28 days

The % degradation (% ThCO2 formation) exceeded 10% within 2 to 3 days for both concentrations of the test material and subsequently exceeded the 60% pass level within the 10 day window.

Therefore,epoxidised soybeanis readily biodegradable.