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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Link to relevant study record(s)

Description of key information

The 48h IC50 (50% immobilization) for Daphnia magna was 20.8 mg/l. The 96-h LC50 for Americamysis bahia was 14 mg/l.

Key value for chemical safety assessment

EC50/LC50 for freshwater invertebrates:
20.8 mg/L
EC50/LC50 for marine water invertebrates:
14 mg/L

Additional information

Several studies with both freshwater and marine invertebrates are available. For the freshwater compartment a static study with<1 days old Daphnia magna is available (Hermens et al.,1984). The study was conducted according to the NEN 6501 which is similar to OECD guideline 201. The 48-h EC50 was 20.8 mg/l. For the marine compartment a flow-through study with the mysid shrimpAmericamysis bahia(tested asMysidopsis bahia) was found to be most critical (Wardet al.,1986). Although this study was not conducted according to an accepted guideline the study was a well conducted near-guideline study, the 96-h LC50 was 14 mg/l. Another more critical study withDaphnia magnawas available (48-hour EC50 = 18 mg/l; LeBlancet al., 1980), however the concentrations were not monitored and it was not clear how much animals were tested per concentration and the number of tested animals was not clear from the paper.Other studies were less critical, less well conducted and/or not reliable.