Registration Dossier

Diss Factsheets

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
0.016 mg/L
Assessment factor:
50
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
0.35 mg/L

Marine water

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

STP

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

Sediment (freshwater)

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

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
0.006 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:
0.003 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

The information concerning the aquatic toxicity of Thioglycolic acid (TGA) are summarized hereafter:


Acute toxicity to fish: LC50_96h > 100 mg/L


Acute toxicity to daphnia: EC50_48h = 35.8 mg/L


Long-term toxicity to daphnia: NOEC = 2.7 mg/L


Toxicity to algae: ErC50_72h = 35.65 mg/L and ErC10_72h = 0.8 mg/L


 


Thioglycolic acid is readily biodegradable and has a log Kow < 1.


 


Based on these results, here is the classification for thioglycolic acid:


Classification Labelling & Packaging according to CLP regulation EC 1272/2008 : H412 (Chronic 3): Harmful to aquatic organisms, causes long-term adverse effects