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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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