Registration Dossier
Registration Dossier
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EC number: 433-470-4 | CAS number: -
Endpoint summary
Administrative data
Description of key information
Additional information
Biodegradation:
In the ready biodegradability study (OECD 301C, MITI (I)), the test substance was partly biodegraded by microorganisms, but over 90% of test substance remained.
In the study based on EEC directive 92/69, C.4-C, December 1992, and OECD guideline No. 301 B July 17, 1992, SET AFIX X 11342 was tested for its ready biodegradability in the carbon dioxide (CO2) evolution test (modified Sturm test) at 35 mg per 2 litres, corresponding to 12 mg TOC/L. SETAFIX X 11342 was not readily biodegradable under the conditions of the modified Sturm test presently performed.
However, the in the Inherent Biodegradability study Setafix Z1077 is easily transformed in an aqueous system to hydrolysis products and not used in bacterial metabolism because of an inherent biodegradation. In addition, due to the activated sludge present, Setafix Z1077 was ultimately biodegraded by 40.8% at the end of the study. Setafix is considered to be inherently biodegradable.
Based on the above studies the test substance is not considered readily biodegradable although it has been found to be inherently biodegradable.
Bioaccumulation:
Based on the OECD Guideline 305 (Bioconcentration: Flow-through Fish Test) the degree of bioconcentration of the test substance in carp was low.
Adsorption/Desorption:
The adsorption coefficient (Koc:) of Setafix X 11342 was determined to be 50000 (log Koc= 4. 70) at 35°C.
Hydrolysis: Study not performed due to poor solubility of test substance.
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