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EC number: -
CAS number: -
Acute freshwater data was available for three trophic levels, fish, Daphnia
and algae. Aquatic PNECs were calculated from the lowest L(E)C50 of 2.43
mg/L. The PNECs were as follows:
PNECfreshwater = 0.00243 mg/L
PNECmarine water = 0.000243 mg/L
PNECintermittent = 0.0243 mg/L
The PNEC for the STP was calculated from a respiration inhibition test
EC50 of 421 mg/L.
PNECstp = 4.21 mg/L
For soil and sediment PNECs the equilibrium partitioning method is used.
EPM PNECs were calculated in EUSES with the following key inputs:
KOC: 1,000,000 (EUSES maximum)
Molecular weight: 823 g/mol
Vapour pressure: 0 pa (vapour pressure is extremely low so is set to 0
for practical purposes)
Water solubility: 0.0000013 (worst case value for equilibrium
The PNECs were as follows:
PNEC sediment = 243 mg/kg dw
PNECmarine sediment = 24.3 mg/kg dw
PNECsoil = 48.6 mg/kg/dw
The lowest acute EC50/LC50 derived was 2.43 mg/L. As the test substance
is not considered readily biodegradable this leads to a classification
of toxic to aquatic organisms - chronic category 2.
H411 - toxic to aquatic organisms with long lasting effects.
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