Registration Dossier
Registration Dossier
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EC number: 411-220-5 | CAS number: 134701-20-5 CG 27-145
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
Not readily biodegradable but rapid primary degradation observed.
Key value for chemical safety assessment
Additional information
In two guideline studies conducted in compliance with OECD 301 B and OECD 301 C the substance was moderately/partly biodegradable (Ciba Geigy, No. 918201; Gakushuin University, G4 -9623D122CP). However, rapid primary degradation was observed. 3-(2-hydroxy-3,5-dimetylphenyl) butanoic acid was identified as degradation product (Gakushuin University, G4 -9623D122CP).
The chemical oxygen demand was determined to be 1.33 g O2/g test mat. (Ciba Geigy, No. 918197).
To support the experimental data, additional QSAR calculations were performed using Biowin v4.10 of the US EPA's EpiSuite v4.00. The overall Ready Biodegradability Prediction was "no".
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