Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.

Diss Factsheets

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information


The adsorption test (Bodsch_2009) performed according to OECD 121 and GLP was rated with RL=1 (reliable without restrictions) and used as key study. The estimated log Koc of SymHelios® 1031 is 3.65 (55% E-isomer; 45% Z-isomere). According to the McCall classification scheme of soil mobility potential SymHelios® 1031 is classified from slight mobile (isomere 1 Koc = 3776) to immobile (isomere 2 Koc = 5342).


Based on the vapour pressure of the substance (1.5·10-6Pa (20°C)), SymHelios® 1031 can safely be considered as non-volatile. In addition, a calculation of Henry`s law constant at 2.37 10-4Pa m³/mol on the basis of the experimental determination of water solubility and vapour pressure, indicates that the substance does not volatilize from water or wet surfaces.

Distribution modelling:

The distribution of the substance SymHelios® 1031 between the environmental compartments air, soil and water is as follows: soil 87.2 %, sediment 4.37 %, water 8.47%, and air 0.005 %.