Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Endpoint summary

Administrative data

Description of key information

See section "Additional information" below.

Additional information

The short-term toxicity of 1-chloro-2-methylbenzene towards fish was tested following the OECD Guideline 203 yielding a LC50 (96h; Oryzias latipes; analytically confirmed) of 7.7 mg/L (MOE Japan, 2001).

The short-term toxicity of 1 -chloro-2 -methylbenzene towards aquatic invertebrates is characterized by an EC50 (Daphnia magna; immob.; 48 h; semi-stat.; geom. mean meas.) = 0.70 mg/L (95% CI: 0.482 - 0.889) having Daphnia magna as test species (MOE Japan, 2001).

The long-term toxicity of 1 -chloro-2 -methylbenzene towards aquatic invertebrates was investigated following OECD TG 211 (1998). Daphnia magna was used as test organism yielding a 21-day NOEC of 0.313 mg/L (TWM) for reproduction as well as parental mortality (MOE Japan, 2001).

The toxicity of 1-chloro-2-methylbenzene towards aquatic algae is characterized by an ECr50(72 h; growth rate; geom. mean meas.) of 9.11 mg/L (95% confidence limit: 8.71 - 9.52), and an EC10(72 h; growth rate; geom. mean meas.) of 6.09 mg/L (95% confidence limit: 5.92 - 6.26) (MOE Japan, 2001).

The toxicity of 1 -chloro-2 -methylbenzene towards microorganisms was tested using Pseudomonas putida as test species. An EC3(16 h) of 15 mg/L was observed having the inhibition of cell multiplication inhibition as endpoint (Bringmann, 1977, 1979, 1980).