Registration Dossier

Diss Factsheets

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
0.068 mg/L
Assessment factor:
1 000
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
0.685 mg/L

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
0.007 mg/L
Assessment factor:
10 000
Extrapolation method:
assessment factor
PNEC marine water (intermittent releases):
0.068 mg/L

STP

Hazard assessment conclusion:
PNEC STP
PNEC value:
4 mg/L
Assessment factor:
100
Extrapolation method:
assessment factor

Sediment (freshwater)

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

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
0.037 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:
0.034 mg/kg soil dw
Extrapolation method:
equilibrium partitioning method

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

The PNEC for waste-water treatment is 4 mg/L based on the EC50 of 400 mg/L obtained in the activated sludge respiration inhibition test and an assessment factor of 100. No long-term studies on aquatic organisms are available and thus PNECs for aqueous environment were derived by the assessment method based on acute aquatic toxicity data. PNECs for sediment and soil were derived by applying the partitioning method. The substance has a low potential for bioaccumulation and its hazards for predators via the food chain are not anticipated.

Conclusion on classification

Acid Yellow 225 was tested for all three trophic levels in the aquatic environment. The most sensitive acute value has been identified to be 96 h LC50 of 68.49 mg/L to Zebra fish, while the NOEC of 50 mg/L from the algae study was used to ascertain the chronic classification. Based on the above-mentioned values, Acid Blue 225 does not warrant classification for aquatic hazard according to CLP.