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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

Sodium 3(2H-benzotriazol-2-yl)-5-sec-butyl-4-hydroxybenzenesulfonate was tested in a biodegradation test according to OECD giudeline 301A (modified Afnor-Test).  The biodegradation of the test item corrected by blank control and measured as DOC (mg/L) is 0 % (28th day). Thus, the test item is not readily biodegradable.

Key value for chemical safety assessment

Biodegradation in water:
under test conditions no biodegradation observed

Additional information

Sodium 3(2H-benzotriazol-2-yl)-5-sec-butyl-4-hydroxybenzenesulfonate was tested in a biodegradation test according to OECD giudeline 301A (modified Afnor-Test) using a concentration of nominally 40 mg/L DOC. The test was left running for 28 days.

Glucose was chosen as positive control. Biodegradation of the positve control corrected by the blank control and mesured as DOC (mg/L) was 87.5 % (28th day). The biodegradation of the test item corrected by blank control and measured as DOC (mg/L) is 0 % (28th day). No inhibiton on the activity of the bacteria was found. The test item is therefore evaluated as not ready biodegradable and not bacteric toxic at the test concentration of 40 mg/L.