Registration Dossier
Registration Dossier
Diss Factsheets
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: 629-767-5 | CAS number: 1228186-18-2
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data

Adsorption / desorption
Administrative data
Link to relevant study record(s)
Description of key information
Due to the cationic surface-active properties will N-[2-(piperazin-1-yl) ethyl]C18-insaturated-alkylamide adsorb strongly onto the solid phase of soil and sediments. The substance can adsorb both onto the organic fraction and, dependent on the chemical composition, onto the surface of the mineral phase, where sodium and potassium ions can be exchanged against the alkyl ammonium ion. The determination of a Koc from log Kow is not opportune, because the common equations for Koc derivation are not valid for both ionic and surface active substances. Therefore not the Koc values should be evaluated but the Kd values. Therefore the Kd values are reported and not the Koc values.
Kd values range from 1000 to 4600 L/kg. For all cationic surfactants the sorption results (Kd) of Eurosoil 4 were used (or other silt soil) as a realistic worst-case representative.
N-(2 -aminoethyl)piperazine which is formed as metabolite in the biodegradation tests has a high Koc of 37000 L/kg indicating that it will be immobile in soil. This high sorption of N-(2 -aminoethyl) piperazine explains the high removal of DOC observed in the sewage treatment simulation study despite the fact that this substance is not degraded.
Key value for chemical safety assessment
- Koc at 20 °C:
- 100 000
Other adsorption coefficients
- Type:
- log Kp (solids-water in soil)
- Value in L/kg:
- 3.301
- at the temperature of:
- 20 °C
Other adsorption coefficients
- Type:
- log Kp (solids-water in suspended matter)
- Value in L/kg:
- 3.602
- at the temperature of:
- 20 °C
Other adsorption coefficients
- Type:
- log Kp (solids-water in sediment)
- Value in L/kg:
- 3.301
- at the temperature of:
- 20 °C
Additional information
The adsorption/desorption behaviour of N-[2-(piperazin-1-yl) ethyl]C18-insaturated-alkylamide on soils was evaluated in a study performed in accordance with OECD testing guideline 106 and GLP requirements. This test was performed for the C18 carbon chain components with 1, 2 and 3 double bonds that represent the main components of the test substance. At the test conditions the adsorption coefficient Kd was found to be in the range of 2300 to 4600 (cm3/g) for the C18:1 component, 1600 to 3300 for the C18:2 component and 1000 to 1900 for the C18:3 component in the different soils tested. Consequently, the test substance is considered to be strongly sorptive to soil/sediment particles.
[LogKoc: 5.0]
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.
