Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Adsorption / desorption:

The substance is a hydrocarbon UVCB. Standard tests for this endpoint are intended for single substances and are not appropriate for this complex substance. However, this endpoint is characterised using quantitative structure property relationships for representative hydrocarbon structures that comprise the hydrocarbon blocks used to assess the environmental risk of this substance with the PETRORISK model (see Product Library in PETRORISK report attached in IUCLID section 13).

Adsorption coefficient has been calculated using Petrorisk. The log Koc for Hydrocarbons, C14-C18, n-alkanes, isoalkanes, cyclics, aromatics (2-30%) ranges from 3.62 - 7.93.  The Koc for this substance ranges from 4.17 x10^3 - 8.51 x10^7.

Distribution modelling:

The distribution of Hydrocarbons, C14-C18, n-alkanes, isoalkanes, cyclics, aromatics (2-30%) in the environmental compartments, air, water, soil, and sediment, has been calculated using the PETRORISK Model, version 5.2. Computer modeling is an accepted method for estimating the environmental distribution of chemicals. Based on the regional scale exposure assessment, the multimedia distribution of the substance is 91.9% to air, 1.6% to water, 3.2% to sediment and 3.3% to soil. Distribution modeling results are included in the 'Multimedia distribution modeling results' tab in the PETRORISK spreadsheet attached to Section 13 of the dossier.