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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
0.081 mg/L
Assessment factor:
50
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
0.096 mg/L

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
0.008 mg/L
Assessment factor:
500
Extrapolation method:
assessment factor

STP

Hazard assessment conclusion:
PNEC STP
PNEC value:
10 mg/L
Assessment factor:
10
Extrapolation method:
assessment factor

Sediment (freshwater)

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

Sediment (marine water)

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

Hazard for air

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
PNEC soil
PNEC value:
0.872 mg/kg soil dw
Assessment factor:
1 000
Extrapolation method:
assessment factor

Hazard for predators

Secondary poisoning

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

Additional information

For discussion of read-across rationale please refer to Section 4 Endpoint SUmmary: Properties and read-across to EC#434-650-5

The following ecotoxicity data are available for EC# 457-320-2 or the structurally and chemically similar compound, EC# 434-650-5:

Acute fish (EC# 434-650-5) 96-hour NOELR = 670 mg/L (the highest nominal loading rate tested)

Acute fish (EC# 434-650-5) 96-hour NOELR = 94.8 mg/L (the highest nominal loading rate tested)

Acute Daphnia (EC# 457-320-2) 48-hour EL50 = 50 mg/L

Chronic Daphnia (EC# 457-320-2) 21-day NOELR = 100 mg/L (the highest nominal loading rate tested)

Algae (EC# 434-650-5) 72-hour NOELR = 4.05 mg/L; EbL50 = 9.62 mg/L; EtL50 = 14.0 mg/L

ASRI (EC# 434-650-5) 3-hour NOELR = 100 mg/L (the highest nominal loading rate tested)

Earthworm (EC# 457-320-2) 14-day NOEC = 1000 mg/kg dry wt soil (the highest concentration tested)

Conclusion on classification

For algae, CLP uses the EC50 for growth rate as the basis for classification. The EtL50 (EL50 for specific growth rate) in the algal study was 14.0 mg/L.

Therefore, none of the data indicate an EC(L)50 of <1 mg/L or <10 mg/L in any species and, consequently, do not require classification as acute category 1 or chronic category 1 (and hence no M-factor is necessary), or chronic category 2. The algal EtL50 value of 14 mg/L necessitates classification of the substance as chronic category 3, because the substance is additionally not rapidly degradable (see IUCLID Section 5.2.1) and its log Kow is greater than 4 (see IUCLID Section 4.7).