Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Adsorption / desorption

No experimental data is available for this endpoint, which is regarded to be mandatory under REACH. However, a scientifically accepted calculation method was used by Chemservice S.A. (2011) to fulfil this endpoint: The adsorption potential to soil of the test substance was determined by the computer program KOCWIN v2.00 (EPIWIN software) by US-EPA. This program estimates the organic-normalized sorption coefficient for soil, which is designated as Koc. The following two models are used: the Salbjic molecular connectivity (MCI) method as well as the traditional method which is based on the logPow value of the substance. The MCI method is taken more seriously into account, due to the fact that is includes improved correction factors. For this chemical compound, the metal compound (Na) has been removed by the program to allow the estimation via the MCI method, resulting in a Koc value of 2.857 L/kg. The traditional method gives a value of 0.086 L/kg. It is noted that these results represent a best-fit to the majority of experimental values, due to the fact that the Koc of this structure may be sensitive to the surrounding pH. This method is regarded to be reliable with restrictions (Klimisch 2) and the data can be used for the chemical safety assessment.

Henry´s Law constant

This information is not mandatory under REACH, however, it is possible to predict the distribution between aqueous solution and air for the test substance with the help of the computer program HENRYWIN v3.20 (EPIWIN software) by US-EPA (Chemservice S.A., 2011). The program calculates the Henry´s Law Constant based on the Bond Method of 0.0000801 Pa*m³/mol (8.01 E-5 Pa*m³/mol) at an ambient temperature of 25 °C. The Group Method shows an "Incomplete Result". This estimation method is scientifically accepted and considered to be reliable with restrictions.

Distribution modelling

This information is not available and / or not required under REACH.