Registration Dossier

Diss Factsheets

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
56.8 µg/L
Assessment factor:
50
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
71.9 µg/L

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
5.68 µg/L
Assessment factor:
500
Extrapolation method:
assessment factor

STP

Hazard assessment conclusion:
PNEC STP
PNEC value:
2.23 mg/L
Assessment factor:
10

Sediment (freshwater)

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

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
2.54 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:
5.04 mg/kg soil dw
Extrapolation method:
equilibrium partitioning method

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

Conclusion on classification

According to CLP regulation EC 1272/2008 and the results mentioned hereafter, 1,3-di-o-tolylguanidine should be considered aquatic chronic 3 (H412).


 


* Short term Toxicity to Fish: 96h-LC50 = 19.3 mg/L


* Short term toxicity to aquatic invertebrates: 48h-EC50 = 7.19 mg/L.


* Toxicity to aquatic algae: 72h-ErC50 = 7.2 mg/L


 


* Chronic toxicity to fish: no data


* Chronic toxicity to aquatic invertebrates: 21d-NOEC = 2.84 mg/L


* Chronic toxicity to aquatic algae: 72h-EC10 = 4.8 mg/L


* 1,3-di-o-tolylguanidine has an octanol water partition coefficient of 2.9 


* 1,3-di-o-tolylguanidine is not readily biodegradable


* 1,3 -di-o-tolylguanidine is hydrolytically stable


 


1,3-di-o-tolylguanidine is considered H412 on the basis of its non rapid biodegradability and the acute toxicity to fish result.