Registration Dossier

Ecotoxicological information

Endpoint summary

Administrative data

Description of key information

Additional information

Although not required under REACH Annex VIII information about terrestrial toxicity will be given. Data of MDEA Esterquat C18 satd. for short-term and long-term toxicity for terrestrial organims are not available. Therefore, the terrestrial toxicity is assessed by read-across to the closely related source substance MDEA-Esterquat C16-18 and C18 unsatd. A justification for read-across is given in the aquatic toxicity endpoint summary.

Toxicity to soil macroorganisms

In a 14-day acute toxicity study, earthworms (Eisenia fetida) were exposed to the structurally similar source substance MDEA-Esterquat C16-18 and C18 unsatd.  at 0, 2.20, 4.74, 10.2, 22.0, 47.4 mg a.i./kg dry soil (artifical soil). The experiment was carried out according to OECD TG 207. The 14 day LC50 value was determined to be >47.4 mg a.i./kg soil dry weight (nominal). The 14 d EC50 was >47.4 mg a.i./kg dry soil. The 14 d NOEC and LOEC, based on appearance and behaviour was >47.4 mg a.i./kg dry soil. No compound related toxicity effects were noted.

 

 

Toxicity to terrestrial plants

The effect of the structurally similar source substance MDEA-Esterquat C16-18 and C18 unsatd. on seedling emergence and growth of the monocotyl oat (Avena sativa) and dicotyl lettuce (Lactuca sativa) crops was studied at nominal concentrations of 0 and 47.4 mg a.i./kg dry soil (1000 mg dispersion/kg dry soil). The study was conducted according to OECD TG 208. The growth medium used in the test was a mixture of natural soil and sand (1:1; pH 7.5; organic matter 1.1%). On day 17, the surviving plants per pot were recorded and cut at soil level for measuring the plant height and dry weight in the seedling emergence and vegetative vigour test, respectively. Seed germination was not affected by the MDEA-Esterquat C16-18 and C18 unsatd.  The 17 d NOEC based on seed germination was >47.4 mg a.i./kg dry soil. In the vegetative vigour test, the plant dry weight and plant height were not affected by MDEA-Esterquat C16-18 and C18 unsatd.  treatment. The 17 d NOEC values based on plant growth (length and dry weight) was >47.4 mg a.i./kg dry soil.