Registration Dossier
Registration Dossier
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EC number: 255-925-4 | CAS number: 42739-64-0
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
Poorly biodegradable.
Key value for chemical safety assessment
Additional information
The test substance belongs to the substance group of Phthalocyanines which resemble in their chemical structure. Due to the structure of the molecule and the extremely low water solubility of Phthalocyanines, biodegradation of the substances grouped to the category is not expected. However several tests on the biodegradability of single Phtalocyanines are available. All test results support the assumption that Phthalocyanines are only poorly biodegradable.
The biodegradability of CAS 147-14-8 was tested in a study following OECD guideline 301 F using domestic activated sludge as inoculum [BASF AG 1988]. After 28 days of inoculation a degradation rate of less than 1 % was determined. This result is supported by a second test accomplished according to OECD guideline 301 C [MITI 1992]. The study was performed with a mixture of sewage, soil and natural water as inoculum. The substance was degraded by 0 % after 14 days of incubation.
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