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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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