Registration Dossier
Registration Dossier
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EC number: 204-612-0 | CAS number: 123-25-1
Endpoint summary
Administrative data
Description of key information
Additional information
Stability
Phototransformation in air
Half-life for reaction with photochemically-produced hydroxyl radicals: 95.4 hours.
Overall OH radicals Rate Constant = 3.49E-7 cm3/(molecule-day).
Hydrolysis
In accordance with REACH Regulation 1907/2006, Annex VIII, Column 2, section 9.2.1.1, hydrolysis as a function of pH does not need to be determined as the substance can be regarded as readily biodegradable.
Biodegradation
The screening test inherent to the biodegradability of diethyl succinate was evaluated using several (Q)SAR models..
All the results indicate that the above substance is expected to be readily biodegradable.
Bioaccumulation
In accordance with REACH Regulation 1907/2006, Annex IX (9.3.2), Column 2, a study of bioaccumulation need not be conducted if the substance has a low potential for bioaccumulation (based on a Log Kow <=3).
Transport and distribution
Adsorption / desorption
The Koc of diethyl succinate was estimated to be 21.2 L/Kg, using the EPA OPERA (Q)SAR model.
Henry's Law constant
The Henry’s Law Constant of diethyl succinate was determined to be HLC = 4.6E-6 atm•m3/mole, equivalent to 0.47 Pa•m3/mole, using the EPA OPERA (Q)SAR model.
Distribution modelling
Distribution in environmental compartments has been calculated using a Fugacity model, under the emission scenario of 1000 kg/h into each of air, water and soil compartments, according to Mackay, Level III. Distribution in various environmental compartments is estimated as: Air= 4.73%; Water= 34.2%; Soil= 61% and Sediment= 0.0929%.
The soil was then found to be the major target compartment.
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.
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