Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

The determined Koc value of 200 indicates that the substance will have a low potential to adsorb to sediment/soil because the value is below 500 -1000 as indicated by the REACH endpoint specific guidance chapter R.7A.

To assess the volatilisation potential of the substance a Henry's law constant was calculated which showed a value of 4.2 Pa. m3/mol. Distribution modelling showed that volatilisation only plays a minor role in the environmental behaviour of Cashmeran. 

Based on Level III distribution modelling using EPISUITE (assuming equal and continuous releases to air, water and soil) using the CAS number 33704 -61 -9 and the measured physico-chemical parameters as input, it is estimated that the majority of the substance released to the environment will partition mainly into soil (85%) and water (14%) with small amounts to sediment and air (both <1%).

The SimpleTreat model, which is incorporated in EUSES, simulated the distribution of the substance in a Sewage Treatment Plant based on vapour pressure, water solubility, log Kow and biodegradability. The model predicts that 94.2% of the substance will partition to water, 2.42% to sewage sludge and 3.42% to air.