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Ecotoxicological information

Long-term toxicity to aquatic invertebrates

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Description of key information

The effect concentration of chronic toxicity to daphnia magna was determined as EC10=6.0 (1.3-7.5) mg/L (arithmetic mean measured concentration) based on effects on reproduction and growth. 

Key value for chemical safety assessment

EC10, LC10 or NOEC for freshwater invertebrates:
6 mg/L

Additional information

Two relevant long term test with Daphnia magna are available for 1,2,3 -trichlorpropane. One test is deemed reliable and useful for risk assessment (Klimish score = 1). In this test, D. magna were exposed to five concentrations of trichloropropane (99.7%) ranging from 0.91 - 28 mg/L and control dilution water for 21 days in a static renewal test design. Growth and reproduction rate were reduced at 9.6mg/L (arithmetic mean measured concentration) to a statistically significant degree. The NOEC in this study is 4.5 mg/L and the EC10 is 6.0 mg/L (1.3–7.5 mg/L).

One other long-term toxicity value of TCP using a marine invertebrate (Chaetogammarus marinus) is available (Kooijman 1981). The reported endpoint is a 21-day LC50 of 20 mg/L (Kielhorn et al 2003). No NOEC is reported from this study.