Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Adsorption/Desorption

EC substance [940-223-9] has a log Kow of -0.57 at pH 6.8 (pH at the measured CMC) and therefore a low tendency to sorb to solids. For Exposure estimation a Koc of 1.6 L/kg from the EUSES 2.1 QSAR for Organic acids is used. According REACH Regulation 2006/1907/EEC Annex VIII, Section 9.3.1, Column 2 an Adsorption/Desorption study need not to be conducted if based on the physicochemical properties the substance can be expected to have a low potential for adsorption (e.g. the substance has a low octanol water partitioning coefficient).

Henry's Law Constant (HLC)

The Modelling program EUSES 2.1 calculates from the water solubility of EC substance [940-223-9] of 1.4 g/L at 20 deg C and the vapour pressure of 3.3*E-10 Pa at 20 degree C a Henry's Law Constant (HLC) of 4.4*E-11 Pa*m3/Mol at the environmental temperature of 12 degree C. This means EC substance [940-223-9] has very low volatility. The corresponding dimensionless Air water partitioning coefficient Kaw can be calculated from the HLC to be 1.9*E-14 at environmental temperature of 12 degree Celscius.