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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Marine water

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

STP

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

Sediment (freshwater)

Hazard assessment conclusion:
PNEC sediment (freshwater)
PNEC value:
88.78 µg/kg sediment dw
Extrapolation method:
sensitivity distribution

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
8.88 µg/kg sediment dw
Extrapolation method:
sensitivity distribution

Hazard for air

Air

Hazard assessment conclusion:
no hazard identified

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
PNEC soil
PNEC value:
14.35 µg/kg soil dw
Extrapolation method:
sensitivity distribution

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

Conclusion on classification

Acute LC50/EC50 values for the three trophic levels are > 1 mg/l (and the 72h NOEC for algae is 1.6 mg/l).

Persistence of the substance in the aquatic environment is not evident, due to:

1. its hydrolytic instability (t1/2=12h at 20.4C) combined with a high water solubility (>1g/ml);

2. the readily biodegradability of its hydrolysis products allantoin and formaldehyde;

3. predicted rapid degradation in sewage treatment plants based on simulation;

4. relatively low potential for bioaccumulation or adsorption (log Kow<0.9).

This means that the substance holds no potential for either acute or chronic hazard for aquatic organisms and thus should not be classified according to the terms of Regulation 1272/2008 (as amended).