Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
0.13 mg/L
Assessment factor:
10
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
0.036 mg/L

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
0.013 mg/L
Assessment factor:
100
PNEC marine water (intermittent releases):
0.036 mg/L

STP

Hazard assessment conclusion:
PNEC STP
PNEC value:
912 mg/L
Assessment factor:
1
Extrapolation method:
assessment factor

Sediment (freshwater)

Hazard assessment conclusion:
PNEC sediment (freshwater)
PNEC value:
11.32 mg/kg sediment dw
Extrapolation method:
equilibrium partitioning method

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
1.13 mg/kg sediment dw
Extrapolation method:
equilibrium partitioning method

Hazard for air

Air

Hazard assessment conclusion:
no hazard identified

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
PNEC soil
PNEC value:
2.19 mg/kg soil dw
Extrapolation method:
equilibrium partitioning method

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

Studies on aquatic organisms are available for member of the fatty acid category. In case of fatty acids, C8 -18, no study is available for the mixture. Thus, read-across is performed mainly to studies available for pure homologues which are contained (> 10%) in the mixture. Lauric acid (C12 - CAS 143 -07 -7) is the most acute toxic homologue of the mixture with an EC50 (48 h) of 3.6 mg/L. The lowest long term effect value is available for invertebrates with a NOEC (21 d) of >= 1.3 mg/L (TWA, measured) retrieved from a study with decanoic acid (C10 CAS 334-48-5). PNEC (freshwater and marine) -calculations are based on LC50/NOEC-values available for these constituents. In case of PNECstp the EC10 of a microorganism study conducted with octanoic acid (C8) is used. PNECsediment and PNECsoil are based on equilibrium partitioning method on the basis of freshwater and marine PNEC-values. Due to the low potential for bioaccumulation, PNECoral is not determined.

Conclusion on classification

Acute and long term toxicity data are available for all three trophic levels (fish, aquatic invertebrates and algae). The lowest short term effect value was determined for aquatic invertebrates with an EC50 (48 h) of 3.6 mg/L. The lowest long term effect value is available for invertebrates with a NOEC (21 d) of >= 1.3 mg/L (TWA, measured). Furthermore the substance is readily biodegradable and thus CAS 90990-08-2 is not classified according to the consolidated version of Regulation (EC) No 1272/2008 and further amendments (ATPs).