Registration Dossier
Registration Dossier
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EC number: 241-806-4 | CAS number: 17852-98-1
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
The substance is poorly biodegradable.
Key value for chemical safety assessment
Additional information
Test on the biodegradability of CAS 17852-98-1 are not available. However three tests on structural analogue substances indicate that the substance is poorly biodegradable.
In general, the analogue substances are composed of a structurally analogue organic part laked with different metals (Ca2+, Sr2 +, Ba2 +, Mn2+). Due to the laking a disintegration of the molecule at pH values relevant in the environment is not expected. Thus an effect or a release of the metal part is not likely. Therefore a transfer of the results obtained for structural related substances to CAS 17852-98-1 is feasible (see Annex).
In a guideline study following OECD guideline 301 C and GLP on CAS 73612-29-0 a degradation rate of 0 % based on O2 consumption of the inoculum was determined (Dainippon Ink and Chemicals Inc., 2006). In a second test conducted in compliance with OECD guideline 301B and GLP on CAS 7023-61-2 the CO2 evolution of activated sludge inoculation time was recorded. The substance was degraded by 0 % during 28 days inoculation time (RCC Ltd, 2007). In a study according to OECD guideline 301C the biodegradability of CAS 5281-04-9 was tested. The substance was inoculated with a mixture of sewage, soil and natural water and the O2 consumption during 28 days inoculation time was recorded. Overall the substance was degraded by 9 -12 % after 28 days (JETOC, 1992). The substances are composed of an analogue organic part that is laked with different metals. Due to the characteristics of the bonding a disintegration of the molecule at environmentally relevant pH is not expected.
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