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Stearic acid, esters with methyl α-D-glucoside is readily biodegradable within 28 days in test performed according to OECD guideline 301D (Ready Biodegradability: Closed Bottle Test). At a concentration of 3.3 mg/L 89% were degraded after 28 days by O2 consumption, at 2.3 mg/L 81%, respectively.

The results are supported by read across data to Isostearic acid, esters with methyl α-D-glucoside. In the study according to OECD Guideline 301 B with activated sludge as inoculum, biodegradation of Isostearic acid, esters with methyl α-D-glucoside reached approximately 76% in 28 days.

According to the REACH Regulation (Annex IX, 9.2) further degradation testing shall be considered if the chemical safety assessment according to Annex I indicates the need to investigate further the degradation of the substance.

No further tests on biodegradation were performed.