Registration Dossier

Ecotoxicological information

Ecotoxicological Summary

Currently viewing:

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
115 µg/L
Assessment factor:
10
Extrapolation method:
assessment factor

Marine water

Hazard assessment conclusion:
no data: aquatic toxicity unlikely

STP

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

Sediment (freshwater)

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

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:
PNEC soil
PNEC value:
207.7 mg/kg soil dw
Assessment factor:
2
Extrapolation method:
assessment factor

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

References:

Bowen HMJ (1979). Environmental Chemistry of the Elements. Academic Press, London, 333 pp.

Hitchcock DR (1975). Biogenic contributions to atmospheric sulphate levels. In: Proceedings of the 2nd National Conference on Complete Water Re-use. Chicago, IL, American Institute of Chemical Engineers.

Lide, D.R. (2008). CRC Handbook of chemistry and physics. 88thedition.

WHO (1990). Barium. Environmental Health Criteria 107. International Programme on Chemical Safety.

WHO (2004). Sulfate in Drinking-water. Background document for development of WHO Guidelines for Drinking-water Quality. WHO/SDE/WSH/03.04/114.

Wolgemuth K & Broecker WS (1970). Barium in sea water. Earth planet. Sci. Lett., 8: 372-378.

Conclusion on classification

Classification

Barium nitrate is not considered to be biodegradable due to its inorganic nature. Furthermore, the substance is not considered to be bioaccumulative based on the available data for fish, i.e. the preferred REACH taxonomic group to assess bioaccumulation potenital. Short and long-term toxicity tests are available for 3 trophic levels. The acute EC50 and LC50 values are situated between > 1.15 mg Ba/L (algae) and 14.5 mg Ba/L (daphnids), corresponding to > 2.19 and 27.6 mg Ba(NO3)2/L, respectively. In accordance with the criteria for classification for short-term effects in the aquatic environment as defined in Annex I, Regulation (EC) No 1272/2008, classification for acute aquatic hazard is not required for barium nitrate as all EC50/LC50 values are above the classification criterion of 1 mg/L. The long-term NOEC and EC10 values range from >= 1.15 mg Ba/L (algae) to 2.9 mg Ba/L (daphnids), corresponding to >= 2.19 and 5.52 mg Ba(NO3)2/L, respectively. In accordance with the criteria for classification for long-term effects in the aquatic environment as defined in Annex I, Regulation (EC) No. 1272/2008, the test material is not classified for long-term aquatic hazard as all NOEC/EC10 values are above the classification criterion of 1 mg/L.