Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
3.2 mg/L
Assessment factor:
10
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
1 mg/L

Marine water

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

STP

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

Sediment (freshwater)

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

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
5.51 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:
9.15 mg/kg soil dw
Extrapolation method:
equilibrium partitioning method

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

Calculation of PNECs:

 

PNEC Freshwater and marine sediment:

The PNECfreshwater sedimentwas derived by the equilibrium partitioning method, with Ksusp-watercalculated by EUSES.

Ksusp-water= 4.29

RHOsusp= 1150

 

PNECfreshwater sed.= (Ksusp-water/RHOsusp)*PNECwater* 1000

                            = (4.29/1150)*3.2 * 1000

                            = 11.94 mg/kg wwt

                           = 55.14 mg/kg dw

 

 

PNECmarine sediment= (Ksusp-water/RHOsusp)*PNECmarine water* 1000

                             = (4.29/1150)*0.32 * 1000

      = 1.19 mg/kg wwt

                            = 5.51 mg/kg dw

 

PNEC soil:

The PNECsoilwas derived by the equilibrium partitioning method, with Ksoil-watercalculated by EUSES.

Ksoil-water= 4.27

RHOsusp= 1700

 

PNECsoil= (Ksoil-water/RHOsoil)*PNECwater* 1000

    = (4.27/1700)*3.2 * 1000

    = 8.04 mg/kg wwt

               = 9.15 mg/kg dw

Conclusion on classification

Acute toxicity:

Algae are the most sensitive species to the toxic effects of cyanuric chloride with an acute EC50 of 800 mg/L. Based on the results obtained in the aquatic toxicity studies, cyanuric chloride has not to be classified regarding acute toxicity to the environment according to Directive 67/548/EEC (DSD) and Regulation (EC) No 1272/2008 (CLP/GHS).

Chronic toxicity:

Invertebrates are the most sensitive species to the toxic effects of cyanuric chloride with an acute EC50 of 1000 mg/L and a NOEC of 32 mg/L derived from a daphnia reproduction study. Classification is based on long-term test. Thus, the NOEC of 32 mg/L represents the worst case for chronic toxicity. Based in these results, the substance has not to be classified for environmental chronic toxicity according to Directive 67/548/EEC (DSD) and Regulation (EC) No 1272/2008 (CLP/GHS).