Fatty acids, C16-18 and C18-unsatd., reaction products with diethylenetriamine, di-Me sulfate-quaternized

Ecotoxicological Summary

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:

PNEC aqua (freshwater)

PNEC value:

2 µg/L

Assessment factor:

50

Extrapolation method:

assessment factor

Marine water

Hazard assessment conclusion:

PNEC aqua (marine water)

PNEC value:

0.2 µg/L

Assessment factor:

500

STP

Hazard assessment conclusion:

PNEC STP

PNEC value:

31 mg/L

Assessment factor:

10

Extrapolation method:

assessment factor

Sediment (freshwater)

Hazard assessment conclusion:

PNEC sediment (freshwater)

PNEC value:

18.5 mg/kg sediment dw

Extrapolation method:

equilibrium partitioning method

Sediment (marine water)

Hazard assessment conclusion:

PNEC sediment (marine water)

PNEC value:

1.85 mg/kg sediment dw

Extrapolation method:

equilibrium partitioning method

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:

PNEC soil

PNEC value:

15.1 mg/kg soil dw

Extrapolation method:

equilibrium partitioning method

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:

PNEC oral

Additional information

Ecotoxicity studies with Partially unsaturated IQAC, DMS quaternised show acute toxicity values < 1 mg/L for aquatic invertebrates and algae.

 

Short-term toxicity to aquatic organisms

Fish: LC50(96 h) = 9.84 — 10.24 mg/L for Oncorhynchus mykiss (OECD 203)

Crustacea: EC50(48h) = 3.7 mg/L for Daphnia magna (OECD 202)

Algae or aquatic plants: ErC50(72 h) = 4.8 mg/L for Pseudokirchneriella subcapitata (OECD 201)

 

Long-term toxicity to aquatic organisms

35d NOEC > 100 μg/l for Desmodesmus subspicatus

63 d NOEC > 100 μg/l for Daphnia magna

 

Biodegradation in water: Inherently biodegradable

 

Bioaccumulation: BCF = 10.7

 

Ozone layer: Due to the ionic structure and a corresponding negligible vapour pressure of the substance a relevant concentration of the substance in the atmospheric compartment is not expected. Furthermore, according to reaction with OH radicals, the half-life of degradation is short with ca. 1 hour at 25 °C.The registration substance is not expected to reach the atmospheric stratosphere and therefore is not expected to present a danger to the structure and/or the functioning of the stratospheric ozone layer.

 

The registration substance is classified with regard to environmental effects.

 

Toxicity towards aquatic micro-organisms is expected to be of no concern for sewage treatment plants. Long-term exposure of aquatic

organisms is therefore unlikely.

 

Bioaccumulation in organisms is considered to be low. Therefore, secondary poisoning through the food chain is of no concern for Partially unsaturated IQAC, DMS quaternised.

 

Conclusion on classification

Results from acute tests with fish, Daphnia and algae are available. Long-term studies are available for Daphnia and Algae.

 

The lowest short-term aquatic toxicity test result is the EC50(48 h) = 3.7 mg/L for Daphnia magna (OECD 202) (Acute toxicity test). This value is well above the threshold value for classification of 1 mg/L.

 

The long-term 63d NOEC > 100 μg/l for Daphnia magna is below 1 mg/L.

 

Partially unsaturated IQAC, DMS quaternised is inherently biodegradable and hydrolysable.

 

The log Kow is ≥ 4. The substance has a n-octanol/water partition coefficient log Kow (calculated based on experimental solubilities) of 4.7, however the experimental determined BCF is < 500 (10.7). Therefore the substance has to be classified as hazardous to the environment.

 

According to GHS Regulation EC No. 1272/2008 partially unsaturated IQAC, DMS quaternised is classified as hazardous to the environment with:

 

Aquatic Chronic 2, H411

 

According to Directive 67/548/EEC oleic-acid based IQAC, DMS quaternised is classified as hazardous to the environment:

 

R51/53