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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

No data available for dimethylamine. Due to the fact that this endpoint is mandatory under REACH, a read-across to the chemical similar substance diethylamine (CAS 109-89-7) is done. The result of this study is used as key value for the CSA. EC10 (30 min) >1000 mg/L

Key value for chemical safety assessment

EC10 or NOEC for microorganisms:
1 000 mg/L

Additional information

No valid experimental data is available concerning the toxicity of dimethylamine to aquatic microorganisms. A read-across to diethylamine (CAS 109 -89 -7) is done for this endpoint. This is possible due to the similar chemical structure of both substances. The available data for diethylamine is reported as follows: Activated domestic sludge was used to test the toxicity to microorganisms of diethylamine. The highest concentration tested was 1000 mg/L, whereby no respiration inhibition was investigated. An EC10 (30 min) >1000 mg/L is therefore reported as result of this study. Furthermore, in a supporting study, Pseudomonas putida was exposed for 17 hour to diethylamine in an experiment according German Standard DIN 38412, Part 8. This study can also be used for the assessment of dimethylamine due to the similar chemical composition of both substances. The following results were reported: EC10 (17h) = 35 mg/L, EC50 (17h) = 47 mg/L, and EC90 (17h) = 60 mg/L, respectively.