Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
no data available: testing technically not feasible

Marine water

Hazard assessment conclusion:
no data available: testing technically not feasible

STP

Hazard assessment conclusion:
no data available: testing technically not feasible

Sediment (freshwater)

Hazard assessment conclusion:
no data available: testing technically not feasible

Sediment (marine water)

Hazard assessment conclusion:
no data available: testing technically not feasible

Hazard for air

Air

Hazard assessment conclusion:
no hazard identified

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
no data available: testing technically not feasible

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential to cause toxic effects if accumulated (in higher organisms) via the food chain

Additional information

Conclusion on classification

The following aquatic toxicity data are available for classification of DTO:

- Reliable short-term LL50/EL50 values have been determined in tests conducted with water-accommodated fractions (WAFs). The resulting are >100, between 5000 and 10000 and circa 3300 mg/L for fish, invertebrates and algae.

- A NOELR of circa 300 mg/L has been determined in the test with algae

- A long-term NOELR of ≥1 mg/L has been determined in a test conducted on the closely-related substance, Crude tall Oil, with aquatic invertebrates (Daphnia magna).

However, no classification is considered necessary because the substance is readily biodegradable.

- There are no data for long-term toxicity to fish but it is not expected that fish would be any more susceptible to the effects of the substance than invertebrates or algae.

 

It is proposed that DTO should not be classified for aquatic environmental hazard.