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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 acute toxicity of 1-chloro-2-methylbenzene towards Daphnia magna was tested following the OECD Guideline 202. A 48-hour EC50 of 0.7 mg/l was obtained (MITI, 2000).

Key value for chemical safety assessment

EC50/LC50 for freshwater invertebrates:
0.7 mg/L

Additional information

It is not reported whether concentrations were confirmed analytically. However, as this study obtained the most sensitive value and, according to the guidance document R.7b, originated from an accepted source, it was selected as key study.

The results of aquatic bioassays are used in the scope of classification and labelling. Summarizing the acute effects of the test item toward aquatic organisms, daphnia are the most sensitive species resulting in a classification as very toxic towards aquatic life.

As this is the most stringent classification, an additional test would not provide new evidence to assess the hazard of the test item towards aquatic life.