Registration Dossier
Registration Dossier
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EC number: 500-022-5 | CAS number: 9014-85-1 1 - 4.5 moles ethoxylated
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.036 mg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 0.36 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.004 mg/L
- Assessment factor:
- 10 000
- Extrapolation method:
- assessment factor
- PNEC marine water (intermittent releases):
- 0.036 mg/L
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 6.8 mg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 0.29 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.029 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:
- 0.036 mg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
The PNECoral for the evaluation of secondary poisoning was not calculated, based on the waiver described by ECHA (Section B.7.2.7 of Part B, Hazard assessment, of Guidance on information requirements and chemical safety assessment, May 2008, pp. 45-47) and the assessment whether the exposure route of secondary poisoning is relevant (Section R.16.5.7.2, Chapter 16 “Environmental Exposure Estimation”, of Guidance on information requirements and chemical safety assessment, May 2008, pp. 93-94).
Conclusion on classification
The substance has a low potential to cause toxic effects if accumulated in higher organisms, as described by ECHA (Section R.16.5.7.2, Chapter 16 “Environmental Exposure Estimation”, of Guidance on information requirements and chemical safety assessment, May 2008, pp. 93-94).
The most sensitive species was fish. The LC50 of 36 mg/L. This value is used to derive the PNECs.
The substance is not readily biodegradable. The log Kow of the substance is 2.8. Thus, the bioaccumulation criterion (log Kow <3) is not fulfilled.
Overall, 2,4,7,9-Tetramethyl-5-decyne-4,7-diol, ethoxylated (1.3) is not classified for acute aquatic toxicity and classified as Aquatic Chronic 3 (H412: Harmful to aquatic life with long lasting effects) based on the LC50 of 36 mg/L in fish and the substance being not readily biodegradable in accordance with Regulation EC No 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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