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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 266-719-9 | CAS number: 67564-91-4
Endpoint summary
Administrative data
Description of key information
Additional information
Soil
Fenpropimorph is completely biodegradable in soil under aerobic conditions. It shows a significant mineralisation rate with up to 18% TAR after 45 days of incubation. The formation of bound residues reaches 44% TAR after 360 days. As a first step in degradation, the molecule undergoes oxidation at various carbon atoms in the molecule. Under aerobic conditions in the dark the degradates fenpropimorph-acid (BF 421-2) and BF 421-7 are the first appearing compounds, whereas under the influence of light BF 421-13 and BF 421-15 were formed. Under anaerobic conditions the degradation of fenpropimorph is slow with low amounts of C02 and bound residues.
Fenpropimorph is degraded in soil under laboratory conditions with an average DT50 value of 19.6 days under aerobic conditions at 20°C. Photolysis does not change the rate significantly.
The DT50 values under outdoor field conditions were ranging from 10 to 90 days. Within some of the degradation studies, a somewhat slower degradation of fenpropimorph occurred after an initial fast decrease in concentration.
Water
Fenpropimorph is hydrolytically stable in the pH-range from 3 to 9. It is also photolytically stable. Nevertheless, it is degraded in the water/sediment study in the dark. Mineralisation of 6 to 8% TAR occurred within 100 days. The DT50 values for the total systems were 54 and 18 days, forming an arithmetical mean of 36 days at 20°C. The high adsorption coefficient leads to a fast movement into the sediment. Within the sediment, Fenpropimorph is oxidised to the metabolite fenpropimorph-acid, which is due to its weaker adsorption and better solubility released from the sediment and found in higher concentrations in the water phase.
After 100 days of incubation, fenpropimorph-acid was detected in the water phases up to 7% TAR and in the sediment up to 23% TAR. The DT50 values in the 2 water phases were 39 and 121 days (arithm. mean = 80, at 20°C).
These results show that in case Fenpropimorph reaches the water, it quickly disappears from the water phase by adsorption and is then converted to fenpropimorph-acid by oxidation. fenpropimorph-acid is a major metabolite in water.
Air
When reaching the troposphere, Fenpropimorph is degraded very fast by photochemical processes with a half life of 2.9 h.
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.
