Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

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

Marine water

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

STP

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

Sediment (freshwater)

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

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
4.626 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:
8.11 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

Degradation

Biodegradation: 57% (OECD 301F)

Hydrolysis: DT50: 45.5 h (pH 7)

 

Bioaccumulation

BCF (fish, Cyprinus carpio): 20

 

Aquatic acute toxicity

For fish: 96 h, LC50 (Brachydanio rerio): > 100 mg/L

For crustaceae: 48 h, EC50 (Daphnia magna): > 100 mg/L

For algae: 72 h, EC50 (Scenedesmus subspicatus): > 100 mg/L

 

Chronic data are not available for Y-15099. However, based on the data above, Y-15099 is considered to be rapidly biodegradable via abiotic hydrolysis (DT50 < 16 d) and has a low potential for bioaccumulation. Based on the rapid hydrolysis, the hydrolysis products ethanol, octanoic acid and silanetriol, (3-mercaptopropyl)- were also considered for aquatic testing. The acute aquatic toxicity of Y-15099 and its hydrolysis products shows L(E)C50 > 100 mg/L for fish, daphnia and algae. Therefore, Y-15099 does not need to be classified and labelled as environmental hazard according to the Regulation (EC) No. 1272/2008 (CLP) and the Regulation (EU) No. 286/2001 (2ndATP).

The acute aquatic toxicity L(E)C50 values are > 100 mg/L for fish, daphnia and algae. Therefore, Y-15099 does not need to be classified and labelled as environmental hazard according to Directive 67/548/EEC.