Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 617-769-9 | CAS number: 858956-08-8
Endpoint summary
Administrative data
Description of key information
Additional information
One test is available testing the effects of aminocyclopyrachlor on soil organisms. The study assessed the effects on soil microflora in accordance with the OECD 216 and 217 at concentrations of 0.74 mg /kg soil dry weight and 3.68 mg/kg soil dry weight. No effect on nitrate levels, nitrate formation rates and rates of short-term respiration were detected with up to and including 3.68 mg/kg soil dry weight, resulting in a NOEC of ≥ 3.68 mg/kg soil dw (nominal).
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
