Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

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).