Registration Dossier

Ecotoxicological information

Endpoint summary

Administrative data

Description of key information

Additional information

Short-term toxicity to fish

The 96h-LC50 was found to be 2 mg/L (nominal concentration).

Long-term toxicity to fish

The 32d-NOEC based on time to hatch and hatching success in fathead minnows is =1.431 mg/L. The NOEC for mortality, body weight and fry length is 0.138 mg/L.

Short-term toxicity to aquatic invertebrates

The substance 48h-EC50 is >9.22 mg/L.

Long-term toxicity to aquatic invertebrates

The available data on acute toxicity show that the aquatic invertebrates are the less sensitive taxon as no effect was recorded with concentrations up to 9.22 mg/L, although the 96h-LC50 for fish was reported to be 2 mg/L. Therefore, it is assumed that long term toxicity to aquatic invertebrates data are not necessary to assess TMPTMA aquatic toxicity.

Toxicity to algae

The 72h-EC50 in algae is 3.88 mg/L based on growth rate. The 72h-NOEC based on biomass and growth rate is equal to 0.177 mg/L.