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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

not readily biodegradable

Key value for chemical safety assessment

Biodegradation in water:
not biodegradable
Type of water:

Additional information

The ready biodegradability of the test item Sulfosuccinate of Lanolin Alcohol was assessed in a 28-day biodegradation test following the “Manometric Respirometry” at nominal active ingredients concentration of 100 mg/L, corresponding to 333.3 mg/L as test item. The biodegradation was followed by measuring the BOD (Biochemical Oxygen Demand) of the test item under defined conditions by means of a Manometric method.

The test item Sulfosuccinate of lanolin Alcohol was found to be not ready biodegradable under the conditions applied in a Manometric Respirometry test, having not reached the pass level (60% biodegradation) during the 10-day window (range of biodegradation: 11.2% - 31.6%) and having showed a maximum biodegradation of 44.8% during the test period (mean of two replicates). The biodegradability curve can show that, despite the low final value of biodegradability, the test item increase its biodegradability during time.

Even so, the test item did not show any inhibitory effects on the microorganism activity in the toxicity control at the tenth day of test period.