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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

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 48h-LC50 for aquatic invertebrates was determined to be 4.53 mg/L for the freshwater species Ceriodaphnia dubia (Warne & Schifko, 1999) and 2.08 mg/L  with 100 % active ingredient for the marine species Acartia tonsa.

Key value for chemical safety assessment

Fresh water invertebrates

Fresh water invertebrates
Effect concentration:
4.53 mg/L

Marine water invertebrates

Marine water invertebrates
Effect concentration:
2.08 mg/L

Additional information

A LC50 of 4.53 mg/L was published for the freshwater invertebrate species Ceriodaphnia dubia, which is not identical to Ceriodaphnia dubia, after an exposure duration of 48 h (Warne & Schifko, 1999). The test method was similar to OECD Guideline 202. A test with the marine copepod Acartia tonsa following Guideline ISO/TC 147/SC5/WG2 resulted in a 48h-LC50 of 5.5 mg/L with 37.9 % active ingredient and 2.08 mg/L for 100 % substance (Torp, 1997).

Furthermore, several results for Daphnia magna are published with LC50 ranging from 9.26 mg/L to 19 mg/L. The LC50 for Daphnia pulex resulted in 26 mg/L. However, the study duration of these publications was 24 h only instead of 48 h as recommended by current standard guidelines.