Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Adsorption/Desorption screening:

An adsorption/desorption screening test (according to OECD 121/ EEC C.19) was not performed, since NeoHeliopan® AP is expected to have a low potential for adsorption.

Nevertheless, the logPow for Neo Heliopan® AP is determined to be <-2.4. The QSAR calculation (PCKOCWIN v2.00) that based on the logPow of -2.4 results in a logKoc of 0.17. Hence, it can safely be assumed that the potential for adsorption is very low. For the hazard assessment a logKoc of 0.17 is used.

Henry´s Law constant / Volatilisation

Based on the vapour pressure of the substance (1.4·10-6 hPa (20°C)), NeoHeliopan® AP can safely be considered as non-volatile. In addition, a calculation of Henry`s law constant at 4.72 10-5 Pa 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

According to a fugacity model calculation using EpiSuite v4.1 (Fugacity Model Level III), the distribution of the substance NeoHeliopan® AP between the environmental compartments air, water soil and sediment is as follows:

air 0.155 %, water 1.65 %, soil 35 % and sediment 63.2%.