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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Adsorption / desorption

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Administrative data

Link to relevant study record(s)

Description of key information

No sorption/desorption test according OECD 106 or Estimation of the Adsorption Coefficient (Koc ) on Soil and on Sewage Sludge using High Performance Liquid Chromatography (HPLC) have been performed for MCA or SMCA because MCA is a weak acid and based on the physicochemical properties (log Pow = 0.49, S = 1000 g/L), the substance is expected to have a very low potential for adsorption. This is confirmed by very low Koc values as estimated by KOCWIN of 1.44 L/kg (MCI) and 2.672 L/kg (Pow). The mean value of 2.1 L/kg is used. Considering the low pKa of MCA it was decided to use the Koc of SMCA (CAS no 3926 -62 -3) of 0.73 L/kg for predicting the partitioning in the environment.

Key value for chemical safety assessment

Koc at 20 °C:
0.73

Additional information