Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 271-756-9 | CAS number: 68607-24-9
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 12 µg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 9 µg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 1.2 µg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 430 µg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 1.25 mg/kg sediment dw
- Assessment factor:
- 50
- Extrapolation method:
- assessment factor
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 125 µg/kg sediment dw
- Assessment factor:
- 500
- Extrapolation method:
- assessment factor
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- PNEC soil
- PNEC value:
- 1 mg/kg soil dw
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- PNEC oral
- PNEC value:
- 6.7 mg/kg food
- Assessment factor:
- 30
Additional information
Based on the available data for the aquatic compartment C20/22 ATQ is most toxic to daphnia with an acute EC50 (48h) of 1.4 mg/L and a chronic NOEC reproduction (21d) of 119 µg/L.
Based on the available data for the freshwater sediment compartment C20/22 ATQ is most toxic to the endobenthic worm Lumbriculus variegatus with an NOEC reproduction (28d) of 62.5 mg/kg dw.
Based on the available data for the terrestrial compartment C20/22 ATQ is most toxic to soil microorganisms with a NOEC of 10 mg/kg soil dw.
Conclusion on classification
Short-term effects
The Environmental classification has to take into account the lowest acute value for aquatic species which is the Daphnia EC50 (48h) of 1.4 mg/L (see Section 6.1.5). This study was carried out in river water to ensure a reliable testing of the cationic surfactant C20/22 ATQ. As a mitigation might have taken place reducing the ecotoxicity, a Mitigation factor of 10 has be applied as a worst case (see CEFIC APAG Aquatic testing approach for Cationic surfactant, REACH Category Approach ‘Primary alkyl amines’). The corrected EC50 (48h) Daphnia to be used in Classification is 1.4/10 mg/L = 0.14 mg/L which leads to R50 for DSD and a M factor of 1 for preparations.
In addition C20/22 ATQ is readily biodegradable, but failed 10-day windows (see Section 5.2.1) and due to the low octanol water partitioning coefficient of 3.3 (see Section 4.7) bioaccumulation can be neglected. The criteria of CLP2011/286/EU(log Kow >= 4) is not fulfilled.
Based on these facts an environmental classification should be based on the ecotoxicity only as the criteria for long-term effects are not fulfilled.
Proposed classification according DSD 67/548/EEC for Short-term effects:
N, R50 with a M factor of 1 for preparations
Proposed classification according CLP 2011/286/EUfor Short-term effects
Acute Category 1, H400
Long-term (chronic) effects
According to the 2ndATP of CLP (286/2011/EU) there are different approaches for the environmental classification of Long-term effects depending on the number of available chronic ecotoxicity data. As three chronic ecotoxicity data for C20/22 ATQ are available the classification for long-term effects has to be based on the chronic ecotoxicity data. The lowest chronic data is the NOEC Daphnia( 21d) 0.119 mg/L in river water (see Chapter 7.1.1.2.2). Due to potential mitigation of ecotoxicity in river water an Application factor of 10 has to be applied resulting in a NOEC Daphnia (21d) of 0.012 mg/L which results for this substances in a Chronic Category 1 Classification.
In Summary
Proposed classification according CLP2011/286/EU for Long-term effects:
Chronic Category 1, H410
OVERALL ENIVIRONMENTAL CLASSIFICATION
Proposed classification according CLP 2011/286/EU for Short-term & Long-term effects:
Acute Category 1, H400 Chronic Category 1, H410 (no M factor)
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
