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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Administrative data

Link to relevant study record(s)

Description of key information

The acute toxicity of the substance to Daphnia magna was determined in a static 48-h test conducted according to a U.S. EPA guideline (LeBlanc, 1980). A second acute toxicty study (24 h)  was conducted by Hüls AG, 1996 according to DIN 38412 which is similar to OECD 202 . Both 
studies were assessed as "reliable with restrictions".

Key value for chemical safety assessment

EC50/LC50 for freshwater invertebrates:
120 mg/L

Additional information

After 24 h of exposure, the LC50 was calculated to be 430 mg/l, while after a period of 48 h a LC50 of 120 mg/l and a NOEC of 15 mg/l were obtained (LeBlanc, 1980). Based on immobilization, the nominal EC50 of the study conducted by Huels AG, 1996 was reported to be 254 mg/l. The lowest available 48 -h LC50 was found to be 120 mg/l (LeBlanc, 1980) and will be considered as the relvant endpoint for the short-term toxicity of the test item to aquatic invertebrates.