Registration Dossier
Registration Dossier
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EC number: 239-263-3 | CAS number: 15206-55-0
Endpoint summary
Administrative data
Description of key information
All key information presented in this section was conducted to applicable international study guidelines, and performed with GLP certification.
Additional information
Toxicity tests on three trophic levels are available. Short-term toxicity tests on fish and daphnids have been conducted using reduced light conditions and a semi-static test design due to the specific substance properties (photoinitiator and hydrolytically unstable). However, for the toxicity test on aquatic algae these test conditions are technically not feasible. Therefore, the algae test is considered worst-case since the parent substance and its degradation products have been tested. The tests on aquatic algae were the most sensitive and resulted in an EC50 (72 h, growth rate) of 94.4 mg/L (nominal) and 68.6 mg/L (parent initial measured). The EC10 (72 h, growth rate) has been determined to be 56.4 mg/L (nominal) and 39.4 mg/L (parent initial measured). After 72 h due to the photosensitive properties and the hydrolytically instability of the test substance the concentrations in the test medium were below the detection limit. Therefore, the initial measured test concentration (parent, worst-case) is used for the risk assessment and the test substance is acutely harmful to aquatic algae. However, based on the EC10, the test substance is very likely chronically not harmful to aquatic algae. Therefore, a chronic classification is not necessary.
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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