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EC number: 939-605-8
CAS number: 68152-93-2
Three ready biodegradation studies are available for Distilled tall oil, maleated. The ready biodegradation criteria were not met in any of these studies, however all the studies were extended beyond 28 days. In two OECD 301D studies > 60% biodegradation was observed in less than 60 days. In an OECD 301B study the maximum level of biodegradation achieved was 52%. Distilled tall oil maleated does not meet the criteria for readily biodegradability but does show a potential to degrade in the environment.
Three reliable ready biodegradation studies have been conducted for Distilled tall oil, maleated. Sowders (2014a and b) reports two extended OECD 301D screening studies. The two studies differ only in the concentration of innoculum used for the test (0.08 or 0.16 ml per litre). In both studies the ready biodegradation criteria were not achieved within 28 days (i.e. >60% oxygen consumption). Both studies did, however, show the potential for Distilled tall oil, maleated to achieve the ready biodegradation criteria within 60 days (with 63 and 67% oxygen consumption at high and low inoculum levels respectively after 60 days). Distilled tall oil, maleated is therefore not expected to persist in the environment.
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