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EC number: 905-898-6
CAS number: -
The substance is not harmful to fish, based on results from the two major constituents. The 96 h LC50 value is >1300 mg/L.
In the key study for DEA, one of the constituents, a static test
according to ASTM-Standard E 729-80, 1980, the acute toxicity of DEA to Pimephales
promelas was assessed. Fry (n = 20 per test vessel), juvenile and
subadult fish (n = 10 per test vessel) were exposed for 96 hours to
various nominal concentrations of DEA and to control water. The
stability of the test concentrations was not verified analytically.
Dissolved oxygen, pH, and temperature were measured daily. The test
concentrations were not adjusted to neutral levels and measured pH
values ranged from 8 to 10.5. Therefore, it is likely that alkaline
pH-effects might have contributed to the observed mortality. Based on
nominal concentrations, the range of the 96 hour LC50values
was 1360 - 1630 mg/l for the fry, 1300 - 1990 mg/l for the juveniles and
1200 - 1580 for the subadult fish. The most sensitive result was
obtained with the subadult fish (96-hour LC50= 1370 mg/l) and
this is selected as the key result for this endpoint. The geometric mean
of the 96 hour LC50values was 1460 mg/l (DOW Chemical, 1982a;
Mayes et al., 1983).
To determine the toxicity of 2,2’,2’’-nitrilotriethanol
to fish, a non-GLP study similiar to APHA method using Pimephales
promelas and a flow-through procedure was performed by Geiger et al.
(1990). The calculated LC50 value after 96 hours in this study was 11800
mg/l related to the nominal concentrations (confirmed by concentration
control analytics). Hence, the chemical is considered to be acutely not
harmful for fish.
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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