Registration Dossier
Registration Dossier
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EC number: 215-960-8 | CAS number: 1461-25-2
Endpoint summary
Administrative data
Description of key information
Hydrolysis as a Function of pH.
The estimated half-life at 25 ºC at pH 7 and pH 9 is > 1 year. At pH 4, although a decrease in concentration over time was observed, significant sample to sample variance prevented accurate quantification of the rate. Based on literature reference to organotin compounds being chemically resistant to hydrolysis and the successful validation of the analytical procedure, the loss of test material from solution has been attributed to adsorption onto the test vessel surfaces, working at a negligible nominal concentration of 4.0 x 10^-5 g/L, not hydrolysis.
Additional information
Hydrolysis as a Function of pH.
The estimated half-life at 25 ºC at pH 7 and pH 9 is > 1 year. At pH 4, although a decrease in concentration over time was observed, significant sample to sample variance prevented accurate quantification of the rate. Based on literature reference to organotin compounds being chemically resistant to hydrolysis and the successful validation of the analytical procedure, the loss of test material from solution has been attributed to adsorption onto the test vessel surfaces, working at a negligible nominal concentration of 4.0 x 10^-5 g/L, not hydrolysis.
Phototransformation data
None of the available data could be considered reliable enough to address the relevant end points. Phototransformation in air data submitted is from handbook data with no information on methods and phototransformation in soil data is from the EPIWIN estimation method which has not been validated for substances containing a metal.
Biodegradation
ZK 24.942 attained 2 % biodegradation within 28 days and therefore may not be termed as readily biodegradable. ZK 24.942 was not found to be inhibitory to activated sewage sludge bacteria under the conditions of this test.
Bioaccumulation
Current versions of EPIWIN have not been validated for estimating endpoints that contain metals in their molecular structure; therefore, estimated values derived from the EPIWIN models should be used with caution. This is the case with Bioaccumulation: aquatic / sediment, IUC4#3/Ch.3.7.
Transport and Distribution
All of the endpoints in this section have been completed with EPIWIN calculations. These are not currently validated for substances containing metals.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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