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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
0.468 mg/L
Assessment factor:
10
Extrapolation method:
assessment factor

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
0.047 mg/L
Assessment factor:
100
Extrapolation method:
assessment factor

STP

Hazard assessment conclusion:
no hazard identified

Sediment (freshwater)

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

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
8.859 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:
0.581 mg/kg soil dw
Assessment factor:
100
Extrapolation method:
assessment factor

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

Conclusion on classification

Acute aquatic toxicity


Short-term results are available from freshwater species (i.e. fish, daphnids, algae) representing three trophic levels:



  • 96h-LC50 (fish: Gobiocypris rarus) = 36.3 mg/L (measured concentration) based on survival.

  • 96h-LC50 (fish: Oryzias latipes) = 39.0 mg/L (measured concentration) based on survival.

  • 48h-EC50 (aquatic invertebrates: Daphnia magna) = 63.0 mg/L (measured concentration) based on mobility.

  • 72h-EC50 (algae: Pseudokirchneriella subcapitata) > 80.6 mg/L (measured concentration) based on growth rate.


The LC50 value obtained with the most sensitive species (i.e. G. rarus) is above the CLP acute classification threshold of 1 mg/L.


Therefore, 2,2-Difluoroethyl acetate does not require to be classified for acute aquatic toxicity under CLP.


 


Chronic Aquatic toxicity


Long-term results are available from freshwater species (i.e. fish, daphnids, algae) representing three trophic levels:



  • 32d-NOEC (fish: Gobiocypris rarus) ≥ 9.54 mg/L (measured concentration) based on hatching, survival, abnormal appearance/behavior, length and weight.

  • 21d-NOEC (aquatic invertebrates: Daphnia magna) = 4.68 mg/L (measured concentration) based on reproduction.

  • 72h-NOErC (algae: Pseudokirchneriella subcapitata) ≥ 80.6 mg/L (measured concentration) based on growth rate.


The NOEC value obtained with the most sensitive species (i.e. D. magna) is above the CLP chronic classification threshold of 1 mg/L.


Therefore, 2,2-Difluoroethyl acetate does not require to be classified for chronic aquatic toxicity under CLP.