Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
no data available: testing technically not feasible

Marine water

Hazard assessment conclusion:
no data available: testing technically not feasible

STP

Hazard assessment conclusion:
no data available: testing technically not feasible

Sediment (freshwater)

Hazard assessment conclusion:
no data available: testing technically not feasible

Sediment (marine water)

Hazard assessment conclusion:
no data available: testing technically not feasible

Hazard for air

Air

Hazard assessment conclusion:
hazard related to composition of atmosphere identified

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
no data available: testing technically not feasible

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no data available: testing technically not feasible

Additional information

PNECs were derived for freshwater, saltwater, sediment, and soil using the equation underlying the Petrotox model or equilibrium partitioning calculations.

Conclusion on classification

No data were identified in the published literature. Data on the acute aquatic toxicity of one member of this category (68476-55-1) were obtained from a proprietary source. The authors report the results based both on nominal loading rates (WAF) and mean measured concentrations. As the test substance is a hydrocarbon stream with various components reporting a measured concentration could be misleading as the measured concentration does not relate to a concentration of the raw stream. Instead, the results reported as WAF have been used, which better represent the potential toxicity of the test substance. Algae were found to be less sensitive than either invertebrates or fish which had similar sensitivity to the test substance (EL50 6.96 mg/L WAF and LL50 14.1 mg/L WAF respectively). The data for this stream have been read across to the other category members.

 

WAF data can be used for comparison with the criteria for environmental classification under the CLP Regulation. However, its use must be considered carefully. Based on the available data (48 hour EL50 6.96 mg/L WAF), streams in this category should have the classification Chronic 2 under the CLP regulations.

 

The partition coefficient of streams in this category ranges from 2.2 - 5 and they have not been shown to be readily biodegradable. Therefore, the classifications cannot be removed.

 

Conclusion

Based on the available experimental data (48 hour EC50 6.96 mg/L WAF) streams in this category should have the classification Chronic 2 under the CLP Regulation. However, the classification of streams in this category may be impacted by other constituents. Components which may impact the classification should be identified by the registrants and the impact of their environmental classification included in the assessment. The classification of each stream can be determined following the equations given in the notes below.

 

Note

Under the CLP Regulations

Acute 1 applies where: Acute 1 x M = 25 %

Chronic 1 applies where: Chronic 1 × M = 25 %

Chronic 2 applies where: (M × 10 × Chronic 1) + Chronic 2 = 25 %

Chronic 3 applies where: (M × 100 × Chronic 1) + (10 × Chronic 2) + Chronic 3 = 25 %

Chronic 4 applies where: Chronic 1 + Chronic 2 + Chronic 3 + Chronic 4 = 25 %