Registration Dossier
Registration Dossier
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EC number: - | CAS number: -
Endpoint summary
Administrative data
Description of key information
Etherdiamines/acetates are pronated under ambient conditions. This means that they will sorb strongly to negatively charged substances like glassware, soil and sediment constituents. For three different soils Kd values were observed for the structual analogue etherdiamine C11-13 (EC No. 931-295-2) via read-across ranging from: 940 to 2590 L/kg. Biodegradation is considered to be the main removal mechanism of this substance.
The half-life in the different environmental compartments will be strongly influenced by the bioavailability of the substances. No data is available for the determination of the half-life of etherdiamine C12-14 in soil or sediment. These values are therefore estimated as a worst-case on the inherently biodegradability of the available fraction and the sorption data as determined in a sorption desorption test via read-across.
Etherdiamine C12-14 has a short predicted half-life in air but because there are no important releases into the atmosphere and volatilisation is expected to be negligible, this removal mechanism is thought to be of low relevance
Etherdiamine C12-14 does not contain hydrolysable covalent bonds. Cleavage of a carbon-nitrogen bond under environmental conditions is only possible with a carbonyl group adjacent to the nitrogen atom. Degradation of etherdiamine C12-14 through hydrolysis is therefore not considered.
Direct photolysis of etherdiamine C12-14 in air/water/soil will not occur, because it does not absorb UV radiation above 290 nm. Photo transformation in air/water/soil is therefore assumed to be negligible.
Standard OECD 305 tests are technically not feasible with these strongly sorbing degradable substance. In addition is the route of exposure in an standard OECD 305 test unrealistic for these substances because the substance will either be sorbed or biodegraded. The bioaccumulation potential of etherdiamine C12-14 was therefore assessed based on a measured log Kow of 0.85. This log Kow is measured using the slow -stirring test according to OECD 123 and indicates that etherdiamine C12-14 has a low bioaccumulation potential.
Additional information
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