Registration Dossier
Registration Dossier
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EC number: 824-801-7 | CAS number: 1093628-27-3
Endpoint summary
Administrative data
Description of key information
In order to assess the biotic degradation, a ready biodegradability test was performed which allows the biodegradability to be measured in an aerobic aqueous medium. The ready biodegradability was determined in the Closed Bottle test performed according to slightly modified OECD 301, EU C.6 and ISO 10707 Test Guidelines, and in compliance with the OECD principles of Good Laboratory Practice.
Benzenesulfonic acid, mono-C10-13-alkyl derivs., compds. with N1,N1-dimethyl-1,3-propanediamine was biodegraded 83% at day 28 in the Closed Bottle test. Hence this compound should be classified as readily biodegradable.
Based on the ready biodegradability test result the hydrolysis of Benzenesulfonic acid, mono-C10-13-alkyl derivs., compds. with N1,N1-dimethyl-1,3-propanediamine has not been evaluated. In Addition benzenesulfonic acid, mono-C10-13-alkyl derivs., compds. with N1,N1-dimethyl-1,3-propanediamined does not contain hydrolysable covalent bonds and an evaluation of the hydrolysis is therefore not considered useful.
In the sorption/desorption study the sorption of Benzenesulfonic acid, C10-13-alkyl derivs., compds with N,N-dimethyl-1, 3-propanediamine to three soils has been evaluated; Lufa 2.2, 2.3 and 2.4. The test substance is a salt which consists of an anionic (Benzenesulfonic acid, C10 -13 -alkyl derivs) and a cationic part (N,N-dimethyl-1, 3-propanediamine).
The anionic part consists of different constituents where the C10, 11 and 12 are the main constituents.
For the anionic compound, because MS is used for quantification the sorption of the three main constituent (C10, 11 and 12) on these soils were measured. The mean of the sorption on the three soils is used for risk assessment. To be able to calculate the mean, the content of the three constituents is used resulting in a mean Koc of 6353.9 L/kg
For the cationic compound, the mean Kd is 287.7 L/kg (mean of 143, 205 and 515 L/Kg). For the cationic product the Koc will not be used.
For the cationic product the normalization of the sorption constant to the organic carbon content of the soil is considered wrong. Instead of the Koc, the Kd will be used as N,N-dimethyl-1, 3-propanediamine will only sorb based on ionic interaction and not via hydrophobic interaction with the organic matter fraction in the soils. In risk assessment Kd’s can as easily be used as the Koc.
Additional information
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