Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

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

Marine water

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

STP

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

Sediment (freshwater)

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

Sediment (marine water)

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

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

Conclusion on classification

Adequate screening-level data are available to characterize the environmental hazard for the purposes of the REACH dossier. Information available for AZDN demonstrates that based on physico-chemical properties (low water solubility but also low Log P: 1.1), it is considered that the substance is mobile in soil and is not expected to adsorb to suspended solids, sediments and soils. Modeling data also indicate that the final destination compartment for AZDN when released in the environment is water and/or soil.

Based on the current information available AZDN is also categorized as non readily biodegradable.

The available aquatic toxicity information (algae, fish and Daphnia tests) on AZDN indicated that AZDN is neither toxic nor harmful for Daphnia and fish. On the other hand AZDN is toxic to algae. AZDN is not expected to bioaccumulate in aquatic/terrestrial species based on its determined Log Pow of 1.1.

AZDN being not bioaccumulative or toxic, it is not considered to be a candidate for PBT listing.

According to DSD/DPD criteria, AZDN is classified N-R51/53

According to CLP criteria, AZDN is not classified (all chronic data conclude to NECs>> 1mg/L).

AZDN is already listed in Annex VI table 3.1 and 3.2 of UE 1272/2008. AZDN is classified: N-R52 -53 and Aquatic chronic 3.