Registration Dossier
Registration Dossier
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EC number: 617-769-9 | CAS number: 858956-08-8
Toxicity to soil macroorganisms except arthropods
Administrative data
Link to relevant study record(s)
Description of key information
Key value for chemical safety assessment
Additional information
Aminocyclopyrachlor is not readily biodegradable and the determined DT50 in soil was = 120 - 433 d (OECD 307, aerobic conditions, 20°C). The substance is soluble in water (WS: 4.2 g/L at 20 °C) and has a low potential for adsorption (log Koc 0-2.16). On basis of physico-chemical properties of the substance it is expected to be mobile in soil and a possible soil exposure pathway is expected to be exposure via soil pore water. Thus in addition to the existing study on soil microflora, two long-term toxicity test with soil organisms are proposed. A study according to OECD 222 is proposed to test the toxicity to soil macroorganisms to cover exposure via contact und uptake of substance. Furthermore a long-term soil toxicity test according to OECD 208 is proposed to cover the uptake via soil pore water. Testing according to OECD 208 is the most suitable standard methodology for plants to be used for industrial substances that are likely to be applied via sewage sludge (Guidedance document Chapter R.7c, ECHA 2017).
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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