Registration Dossier

Ecotoxicological information

Ecotoxicological Summary

Currently viewing:

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
2.5 µg/L
Assessment factor:
1 000
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
25 µg/L

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
0.25 µg/L
Assessment factor:
10 000
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:
11.9 µg/kg sediment dw
Extrapolation method:
equilibrium partitioning method

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
1.2 µg/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:
0.84 µg/kg soil dw
Extrapolation method:
equilibrium partitioning method

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential to cause toxic effects if accumulated (in higher organisms) via the food chain

Additional information

The substance was toxic to Cyprinus carpio when tested according to OECD 203. The 96 hr LC50 for was reported to be 2.5 mg/L.

The substance was harmful to Daphnia magna when tested according to OECD 202. The 48 hr EC50 for was reported to be 52 mg/L.

The substance was harmful to aquatic algae when tested according to OECD 201. The 72 hr EC50 based on growth rate was reported to be 31 mg/L (TWA concentration).

Based on these data from three trophic levels acute fish toxicity was identified as most severe and data on acute fish toxicity was used to derive the PNECs for freshwater and marin e water (due to lack of data on marine species).

The substance was not acutely toxic to microorganisms when tested according to OECD 301F. The data obtained with the reference substance alone and with HELIOTROPINE CRYSTALS + reference substance show no toxic effect of HELIOTROPINE CRYSTALS on the micro-organisms at the test concentration (100 mg/L). Based thereupon, the PNEC STP was derived.

The PNECs for sediment, marine sediment and soil were derived by the partitioning method due to lack of data on sediment or soil organisms. Hazard to air is not expected. and as the substance does not bioaccumulate (log POW 1.2) and is readily biodegradable, accumulation through the food chain in not expected.

Conclusion on classification

Based on acute aquatic toxicity data on three trophic levels and the low potential for bioaccumulation (log POW 1.2) and the ready biodegradability of the substance, classification for acute or chronic aquatic toxicity according to CLP (Regulation EC No 127272008) is not required. Ozone depletion potential is not expected but data are lacking.