Registration Dossier

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Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
0.412 mg/L
Assessment factor:
50
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
0.3 mg/L

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
0.041 mg/L
Assessment factor:
500
Extrapolation method:
assessment factor

STP

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

Sediment (freshwater)

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

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
1.18 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:
2.12 mg/kg soil dw
Extrapolation method:
equilibrium partitioning method

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

In cases where no data is available for bis(2-ethylhexyl) hydrogen phosphate, read across with dibutyl hydrogen phosphate (CAS No. 107-66-4) is proposed to cover the respective endpoints.

Dibutyl hydrogen phosphate and bis(2-ethylhexyl) hydrogen phosphate have very similar chemical structures and their main physico-chemical parameters (vapour pressure, water solubility, octanol/water partition coefficient, organic carbon partition coefficient and dissociation constant) are in the same range. Therefore a read across between this two substances to cover physico-chemical and ecotoxicological endpoints for bis(2-ethylhexyl) hydrogen phosphate seems to be justified.

More details regarding the read across justification are depicted in the annex of the Chemical Safety Report (CSR).

Conclusion on classification

Bis(2-ethylhexyl) hydrogen phosphate is not legally classified as dangerous for the environment and so neither included in Annex I of Directive 67/548/EEC nor in Regulation 1272/2008 (CLP), including its 2nd and 3th ATP.

According to the information summarised in this chapter, bis(2-ethylhexyl) hydrogen phosphate should not be classified with the following reasons:

- The lowest acute toxicity value is 30 mg/l obtained in a short-term toxicity test towards fish.

- The most sensitive long-term toxicity is to fish with a 10d-NOEC of 20.6 mg/l

- bis(2-ethylhexyl) hydrogen phosphate is readily biodegradable

- The bioaccumulation potential is assessed in a bioconcetration study on fish. The highest BCF value is 6, indicating a very low potential for bioaccumulation.

With the data listed above, bis(2-ethylhexyl) hydrogen phosphate should not be classified according to DSD (Directive 67/548/EEC) and GHS (Regulation EC 1272/2008 including Commission Regulation EU-286/2011).