Registration Dossier
Registration Dossier
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EC number: 613-583-7 | CAS number: 64366-79-6
Endpoint summary
Administrative data
Description of key information
Additional information
The test substance is a complex mixture of components containing the reaction products emerging from the addition of 3 mol behenic acid to 1 mol of polyglycerol. It was found to be of low aquatic toxicity but of moderate biodegradability and of high adsorptivity. Due to its lacking ready biodegradability and its high potential to partition to soil, long-term exposure of terrestrial organisms is possible. According to ECHAs “Guidance on information requirements and chemical safety assessment, Chapter R.7c: Endpoint specific guidance” and the REACH regulation EC 1907/2006, long-term terrestrial studies should be considered for substances holding adsorptive properties. According to Annex IX and Annex X (Paragraph 9.4, Column 2) of the REACh regulation 1907/2006 tests on soil organisms do not need to be conducted if a direct or indirect exposure of the soil compartment is unlikely.
The Average Molecular Weight (Mw) was determined to amount to 2300 g/mol (characterization study BASF SE 11L00395, 2012). The log Kow value of a representative structure was calculated to be approx. 27.6 using EPI Win v4.10 and its Average Maximum Diameter (Diam Max-Average) was calculated to be 45.3 nm using Catalogic BCF base-line model v2.05 (both BASF SE, 2013).
These physico-chemical properties indicate a hindered absorption and distribution into terrestrial organisms due to the inability to pass cell membranes. Therefore, the molecules are unlikely to be bioavailable to terrestrial organisms just like plants and earthworms. Based on the physico-chemical properties of the substance and its negligible toxicity to aquatic organisms, further studies investigating the terrestrial toxicity were not considered necessary.
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