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EC number: 203-978-9
CAS number: 112-50-5
In a guideline study in freshwater, the substance 2 -(2 -(2
-ethoxyethoxy)ethoxy)ethanol was found to be readily biodegradable. The
BOD28 was 92.1%. The biodegradation was also assessed at a number of
concentrations using a non-adapted domestic sewage innoculum in a
freshwater medium. Ready degradation was observed with a BOD20 of 71%.
In a single study in saltwater, ready biodegradation was not seen with
only 22% degradation after 20 days.
The substance has a low octanol-water partition coefficient (log Kow =
-0.5) and and is fully miscible in water. Based on these physical
chemical properties, if released to water, the compound will remain in
the water compartment. TEGEE has low potential for adsorption to soil or
sediment or bioaccumulation in aquatic organisms. Mackay fugacity
modelling (level 1) indicates that, in the absence of degradation, more
than 98% of the substance would end up in the water phase with the
remainder in the soil phase. Insignificant amounts would remain in the
air and sediment phases. Level 3 fugacity modelling indicates that,
taking into account degradation and using inflow parameters which are
consistent with the known production tonnage of this substance in
Europe, environmental concentrations in water are predicted to be below
100ug/l and soil and sediment less than 1ug/kg. This can be considered a
worse case prediction as it assumes all product is emitted with no
emission control systems used. Soil concentrations are unlikely to
exceed significantly sediment concentrations and air concentrations are
likely to be well below 2ng/m3. The only significant compartment of
interest when it comes to fate of this product is the water compartment.
There is no specific information available on degradation pathways in
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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