Registration Dossier
Registration Dossier
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EC number: 500-051-3 | CAS number: 26780-96-1
Ecotoxicological Summary
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).
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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