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EC number: 201-201-8
CAS number: 79-38-9
No experimental data on CTFE degradation in water are available. In fact, on the grounds of the physico-chemical properties and environmental fate assessments of the substance, no release to the aquatic environment is expected. Moreover the substance profile itself indicate the difficulty to properly test CTFE and provide meaningful results of its biodegradation in aqueous systems as well as in sediment. Nevertheless, in order to evaluate the biodegradation hazard profile of CTFE, the BIOWIN v. 4.10 model has been applied. The prediction obtained from the model suggests that CTFE is not ready biodegradable. However, no adverse effects on aquatic organisms are expected because of no partitioning of CTFE into water.
On the grounds of the physico-chemical properties of CTFE and the
results on environmental fate obtained from EQC Fugacity III Model
(Version 2.02, The Canadian Centre for Environmental Modelling and
Chemistry, May 2003), the substance is expected to primarily and rapidly
partition to the atmosphere. No release to the aquatic environment is
consequently expected. Moreover, according to Appendix R.7.1-4 from the
Guidance on Information Requirements and Chemical Safety Assessment
Chapter R.7a, the Henry Law Constant estimated for CTFE (31500 Pa m³/mol
at 25°C, HENRYWIN, EPI SUITE v. 4.0,US EPA) suggests a rapid
volatilization of the substance from water.
The substance profile itself indicates the difficulty to properly
test CTFE and provide meaningful results of its biodegradation in
aqueous systems as well as in sediment and soil. Nevertheless a further
assessment based on Quantitative Structure Activity Relationships
(QSARs) has been however applied.
Particularly, in order to evaluate the biodegradation hazard
profile of CTFE, the BIOWIN v.4.10, EPI Suite v.4.0 model has been
The prediction of the BIOWIN model suggests that CTFE is not ready
biodegradable. Nevertheless no adverse effects on water and sediment
organism are expected because of no partitioning of CTFE into water.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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