Registration Dossier
Registration Dossier
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EC number: 201-077-5 | CAS number: 78-04-6
Endpoint summary
Administrative data
Description of key information
Additional information
Aquatic bioaccumulation
The following information is taken into account for any hazard / risk / bioaccumulation assessment:
No information is available for DBTM, however it is possible to read across from the structurally similar compound DBTC.
The two studies provided in support of omitting further testing were Tsuda et al (1986) and The KEMI report (Waterson et al 1994). The Tsuda et al (1986) study was conducted to non-standard methods, and the parameters of the study were not comparable to those required for accurate assessment of this data requirement. Both studies were assigned reliability scores of 4 (not assignable), this was based on methodological deficiencies and areas lacking in detail in the reporting of the study by Tsuda et al (1986).The KEMI report (Waterson et al 1994), is a comprehensive review of mono and di-substituted organotins and encompasses a later report by Tsuda (Tsuda et al 1988). Both studies, though not sufficient for assessment indicated that the potential for bioaccumulation in aquatic species is low.
As bioaccumulation is considered to be unlikely further testing was ommitted in accordance with column 2 of REACH Annex IX. Bioaccumulation in Aquatic Species does not need to be conducted as the chemical safety assessment concluded that the substance is of no immediate concern to the environment. The available data are adequate for classification and labelling purposes and PBT assessment, so no further testing is required. Also direct and indirect exposure of the aquatic compartment is unlikely.
Terrestrial bioaccumulation
No data available. However based on the low BCFs derived from the fish bioaccumulation study with the structurally similar substance DBTC at 4.3.1 above, there is considered to be a low risk of bioaccumulation.
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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