Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
0.6 µg/L
Assessment factor:
10
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
0 mg/L

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
0.06 µg/L
Assessment factor:
100
Extrapolation method:
assessment factor

STP

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

Sediment (freshwater)

Hazard assessment conclusion:
no hazard identified

Sediment (marine water)

Hazard assessment conclusion:
no hazard identified

Hazard for air

Air

Hazard assessment conclusion:
no hazard identified

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
no hazard identified

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

Conclusion on classification

All effective concentrations describing acute effects of hydrazine towards aquatic organisms are below 1 mg/L.

As hydrazine is purely inorganic, it is scored as not biodegradable.

Hydrazine has only a very low potential to bioaccumulate in aquatic organisms.

Based on the available information, hydrazine has to be classified as:

- Dangerous for the environment; R50/53; very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment (Directive 67/548/EEC)

- Hazardous to the aquatic environment- H400, Acute Hazard, Category 1 and H 410, Chronic Hazard, Category 1 (Regulation EC 1272/2008)