Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
4 µg/L
Assessment factor:
100
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
20 µg/L

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
4.6 µg/L
Assessment factor:
10 000
Extrapolation method:
assessment factor

STP

Hazard assessment conclusion:
PNEC STP
PNEC value:
2.5 mg/L
Assessment factor:
100
Extrapolation method:
assessment factor

Sediment (freshwater)

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

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
0.001 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:
0.001 mg/kg soil dw
Extrapolation method:
equilibrium partitioning method

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
PNEC oral
PNEC value:
10.67 mg/kg food
Assessment factor:
300

Additional information

Conclusion on classification

Studies of this substance or analogs are available for evaluating biodegradation and toxicity to aquatic vertebrate and invertebrate species.

 

An analog of this substance was not ready biodegradable when tested in accordance with OECD 301B. The mean percent theoretical CO2 evolved for the test substance was 1.5% (range 0.6 to 2.0%). The control chambers evolved an average of 6.5 milligrams of CO2 over the test period. The mean percent theoretical CO2 evolved for the reference substances was 99%.

 

The acute aquatic toxicity of an analog of this substance was evaluated using rainbow trout and was conducted in accordance with OECD 203. The 96 h LL (Lethal Loading Rate) 50 value of the substance was determined to be 4.5 mg/l. The NOEL was 1.8 mg/l.

 

Then acute toxicity of this substance also was evaluated in Daphnia (OECD 202). The 48-Hour EL50 based on nominal loading rates was determined to be 5.4 mg/L The No Observed Effect Concentration was less than 1 mg/L.

 

The acute toxicity of this substance was evaluated in freshwater algae in accordance with OECD Guideline 201. Exposure of Scenedesmus subspicatus to the test material gave 72 hour and 96 hour EC50s of 2.0 mg/L based on the number of cells and 2.1 mg/L based on the average specific growth rate. Based on the number of cells/mL or the average specific growth rate, the 72 and 96 hour NOEC values are 1.0 mg/L. At 5.0 mg/L this substance was algistatic rather than algicidal.

 

Based on the available environmental fate and ecotoxicological data for daphnids, fish and algae, this substance needs to be classified as to the aquatic environment according to Directive 67/548/EEC, the EU CLP (Regulation (EC) No. 1272/2008). This substance has acute aquatic toxicity between 1-10mg/L in the most sensitive species, is not readily biodegradable, and has an estimated log P ≤3.0.