Triphenylphosphine

Ecotoxicological Summary

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:

no hazard identified

Marine water

Hazard assessment conclusion:

no hazard identified

STP

Hazard assessment conclusion:

no hazard identified

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:

PNEC oral

PNEC value:

0.01 mg/kg bw/day

Conclusion on classification

Environmental classification justification

Aquatic compartment

According to Regulation (EC) 1272/2008 Annex VI Table 3.1 and 3.2, the substance is not classified regarding environmental hazards.

 

Self-classification

Aquatic compartment

Following CLP (GHS-EU), the substance is not to be classified as acutely hazardous to the aquatic environment. Based on the available chronic data, the substance is not to be classified as chronically hazardous to the aquatic environment,butwill be classified in the Category Chronic 4 (‘Safety net” classification)

 Rationale:

The substance is not to be classified as acutely hazardous to the aquatic environment, since the lowest acute effect value is > 1 mg/L.

Chronic data are only available for algae; therefore, classification is based on the available chronic data (algae) and on acute toxicity data for the trophic level not covered by chronic data (fish and daphnia):

- Chronic toxicity data:

As described above, chronic data are available for algae (ErC10 > 5 mg/L, see IUCLID Ch. 6.1.5). The available data indicate that the substance does not present a long-term hazard according to the categories outlined in Table 4.1.0(b) (i) (Commission Regulation (EU) No 286/2011 amending Regulation (EC) No 1272/2008).

- Acute toxicity data:

Fish and aquatic invertebrates are the trophic levels which are not covered by chronic data. Therefore, classification is based on the respective acute effect data; for fish, the 96h-LC50 is determined to be > 10000 mg/L (see IUCLID Ch. 6.1.1); for daphnids, no toxic effects could be observed at the highest test concentration (see IUCLID Ch. 6.1.3). Therefore, the 48-h EC₅₀was determined to be >5 mg/L, which is, however, significantly higher as the substance’s water solubility (< 0.165 mg/l at 22 °C; see IUCLID Ch. 4.8). According to the criteria outlined in Table 4.1.0(b) (iii) (Commission Regulation (EU) No 286/2011 amending Regulation (EC) No 1272/2008), triphenylphosphine is not classified under the above criteria but there are nevertheless some grounds for concern. The substance is not rapidly degradable and log Kow is > 4.5 (see IUCLID Ch. 4.7). In addition, TPP is a poorly soluble substance for which no acute toxicity is recorded at levels up to the water solubility. According to the “Safety net” classification(Commission Regulation (EU) No 286/2011 amending Regulation (EC) No 1272/2008)TPP will be classified in the Category Chronic 4 unless other scientific evidence exists showing classification to be unnecessary.

Overall, it can be concluded that TPP is to be classified as Category Chronic 4.

 

Atmospheric compartment

The test substance is not listed in Annex 1 of Regulation (EC) 2037/2000 on substances that deplete the ozone layer.

The test substance does not belong to the green house gases listed in P Forster, PV Pamaswamy et al. Changes in Atmospheric Constituents and Radiative Forcing. In: Climate Change 2007: The Physical Basis. Contribution of Working Goup 1 to the Fourthe Assessment Report of the Intergovernmental Panel on climate Change.