Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
0.056 mg/L
Assessment factor:
1 000
PNEC freshwater (intermittent releases):
0.56 mg/L

Marine water

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

STP

Hazard assessment conclusion:
PNEC STP
PNEC value:
100 mg/L
Assessment factor:
100

Sediment (freshwater)

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

Sediment (marine water)

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

Hazard for air

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
PNEC soil
PNEC value:
4.2 mg/kg soil dw
Extrapolation method:
equilibrium partitioning method

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
PNEC oral
PNEC value:
8 mg/kg food
Assessment factor:
30

Additional information

Conclusion on classification

TMQ (1,2-Dihydro-2,2,4-trimethylquinoline, oligomers) is not yet classified in the Annex I of Directive 67/548/EEC. According to the information summarized in this chapter, it can be classified as R 52/53 "Harmful to aquatic organisms, and may cause long-term adverse effects in the aquatic environment" with the following reasons:

- The most sensitive acute toxicity is to Daphnia: 48h-EL50 of 56 mg/l upon water accomodated fraction (Bayer AG, 2000)

- Not readily biodegradable with 0 % degradation observed in 28 days (Bayer AG, 2000)

With the data listed above, TMQ should be classified to "Chronic Category 3" according to GHS (Regulation EC 1272/2008).