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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
0.1 mg/L
Assessment factor:
1 000
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
1 mg/L

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
0.01 mg/L
Assessment factor:
10 000
Extrapolation method:
assessment factor
PNEC marine water (intermittent releases):
1 mg/L

STP

Hazard assessment conclusion:
no emission to STP expected

Sediment (freshwater)

Hazard assessment conclusion:
PNEC sediment (freshwater)
PNEC value:
45.2 mg/kg sediment dw
Assessment factor:
1 000
Extrapolation method:
equilibrium partitioning method

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
4.52 mg/kg sediment dw
Assessment factor:
1 000
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:
8.97 mg/kg soil dw
Assessment factor:
1 000
Extrapolation method:
equilibrium partitioning method

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

Ecological toxicity of the substance was calculated using assessments of potential hazard of the test item to aquatic organisms (in freshwater, marine water, sewage treatment plants, freshwater sediment and marine water sediment), air, terrestrial organisms (in soil), and predators (via secondary poisoning).

Hazard for Aquatic Organisms

In order to evaluate the freshwater and marine water hazard, experimental data on the toxicity of the substance to aquatic algae was used, which demonstrated that the NOEC for 72 hour exposure to Desmodesmus subspicatus was a nominal value of 100 mg/L. Using this value, the subsequent values were determined:

PNECfreshwater = 0.1 mg/L

PNECmarine water = 0.01 mg/L

Experimental data specific to the toxicity of the substance to microorganisms was not available, however, the toxicity to microorganisms is implied in the experimental study which determined that the substance is almost completely biodegradable within 28 days. A PNEC value for organisms was subsequently not calculated as emission to sewage treatment plants is not expected.

Hazards to freshwater and marine water sediment were calculated using the equilibrium partitioning method due to the absence of experimental data specific to sediment. The following PNEC values were calculated:

PNECfreshwater sediment (dry weight) = 45.2 mg/kg

PNECmarine-sediment (dry weight) = 4.52 mg/kg

Hazard for Air

As the vapour pressure of the substance is negligible (up to 0.0000001 Pa), the biotic and abiotic risks in air are not considered relevant.

Hazard to Terrestrial Organisms: Soil

Hazard to terrestrial organisms via the soil was calculated using the equilibrium partitioning method due to the absence of experimental data specific to soil. The following PNEC value was calculated:

PNECsoil (dry weight) = 8.97 mg/kg

Hazard to Predators: Secondary Poisoning

The substance is considered readily biodegradable as the test item was practically completely biodegraded within 28 days in a CO2 evolution test. Subsequent toxicity of the substance if accumulated is not expected based on the toxicity studies.

Conclusion on classification

None of the data available shows concern leading to classification for the aquatic compartment according CLP Regulation (EC) No. 1272/2008.