Registration Dossier
Registration Dossier
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EC number: 244-005-8 | CAS number: 20748-72-5
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
Acutely toxic to aquatic algae.
Key value for chemical safety assessment
Additional information
(2-hydroxyethyl)ammonium nitrate is soluble in water and dissociates to (2 -hydroxyethyl)ammonium and nitrate.
Since no studies on the aquatic toxicity of the substance (2 -hydroxyethyl)ammonium nitrate are available, study reports and published literature about the toxic effects of its dissociation products have been consulted alternatively.There are two studies available on the toxicity of 2 -aminoethanol (CAS 141-43-5) to aquatic algae (Scenedesmus subspicatus and Selenastrum capricornutum) with EC50 values from 2.8 - 22 mg/L (growth rate). Corresponding NOECs were determined to be in the range of 1 to 4 mg/L.
Based on a reliable guideline study with potassium nitrate (CAS 7757-79-1), it was shown that the substance was not at all or only slightly inhibitory at the highest concentration tested. After an exposure period of 10 days, an EC50 of 1043 mg/L nitrate was derived from testing with 10 different cultures of benthic diatoms.
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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