Registration Dossier
Registration Dossier
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EC number: 201-224-3 | CAS number: 79-77-6
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
Acutely toxic for aquatic invertebrates
Key value for chemical safety assessment
Additional information
Four guideline studies on the toxicity of Beta-Ionon on aquatic invertebrates are available. The key results were obtained by a study performed in compliance with OECD guideline 202 including analytical dose verification. Daphnia magna was exposed to Beta-Ionon for 48 hours and an EC50 of 4.03 mg/l based on nominal concentrations was determined (BASF AG, 2004). In a screening study following EEC Directive 93/32/EEC an EC50 > 1 mg/l was determined after 48 hours (BASF AG, 2004). Two further studies investigating the toxicty of Beta-Ionon on D. magna in accordance to German standard DIN 38412 part L11 are available. The test animals were either single bred or bred in massculture. For the single-bred Daphnia an EC50 of 1.09 mg/l was determined and a comparable EC50 of 1.05 mg/l was determined. However, in both studies a solubiliser was used (BASF AG, 1990).
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