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Diss Factsheets
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EC number: 500-129-7 | CAS number: 55552-95-9
- 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)
- Endpoint:
- adsorption / desorption: screening
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 121 (Estimation of the Adsorption Coefficient (Koc) on Soil and on Sewage Sludge using High Performance Liquid Chromatography (HPLC))
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- HPLC estimation method
- Media:
- soil
- Radiolabelling:
- no
- Remarks on result:
- not determinable because of methodological limitations
- Remarks:
- An assessment of the test item indicated that it would be at least partially ionized across the environmentally relevant pH range (pH 5 to 7). Therefore, it is anticipated that adsorption to the organic carbon content of soils and sediments would not be the dominant mechanism controlling the mobility of the test item in the environment. Adsorption of cationic species occurs primarily by an ion-exchange mechanism and depends on the cation-exchange capacity of the soils as well as a variety of other parameters (Boethling, R. S. 1994. Environmental aspects of cationic surfactants. In J. Cross and E. J. and Singer (ed.), Cationic Surfactants: Analytical and Biological Evaluation, vol. 53. Marcel Dekker, Inc., New York, USA.). Consequently, the true adsorption coefficient of the test item would be significantly higher than a Koc value determined by the methods C.19 and OECD 121 or via any computer-based Koc estimation software.
- Validity criteria fulfilled:
- not applicable
- Executive summary:
Testing was not carried out using Method C.19 Adsorption Coefficient of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 121 of the OECD Guidelines for Testing of Chemicals, 22 January 2001, as they were considered not applicable due to the following reason:
• An assessment of the test item indicated that it would be at least partially ionized across the environmentally relevant pH range (pH 5 to 7). Therefore, it is anticipated that adsorption to the organic carbon content of soils and sediments would not be the
dominant mechanism controlling the mobility of the test item in the environment. Adsorption of cationic species occurs primarily by an ion-exchange mechanism and depends on the cation-exchange capacity of the soils as well as a variety of other parameters (Boethling, R. S. 1994. Environmental aspects of cationic surfactants. In J. Cross and E. J. and Singer (ed.), Cationic Surfactants: Analytical and Biological Evaluation, vol. 53. Marcel Dekker, Inc., New York, USA.). Consequently, the true adsorption coefficient of the test item would be significantly higher than a Koc value determined by the methods C.19 and OECD 121 or via any computer-based Koc estimation software.
Therefore, based on the expected high cation-exchange ability of the test item, the test item is anticipated to lack mobility in soils.
Reference
Description of key information
Testing was not carried out using Method C.19 Adsorption Coefficient of Commission
Regulation (EC) No 440/2008 of 30 May 2008 and Method 121 of the OECD Guidelines for
Testing of Chemicals, 22 January 2001, as they were considered not applicable due to the
following reason:
• An assessment of the test item indicated that it would be at least partially ionized
across the environmentally relevant pH range (pH 5 to 7). Therefore, it is anticipated
that adsorption to the organic carbon content of soils and sediments would not be the
dominant mechanism controlling the mobility of the test item in the environment.
Adsorption of cationic species occurs primarily by an ion-exchange mechanism and
depends on the cation-exchange capacity of the soils as well as a variety of other
parameters (Boethling, R. S. 1994. Environmental aspects of cationic surfactants. In
J. Cross and E. J. and Singer (ed.), Cationic Surfactants: Analytical and Biological
Evaluation, vol. 53. Marcel Dekker, Inc., New York, USA.). Consequently, the true
adsorption coefficient of the test item would be significantly higher than a Koc value
determined by the methods C.19 and OECD 121 or via any computer-based Koc
estimation software.
Therefore, based on the expected high cation-exchange ability of the test item, the test item is
anticipated to lack mobility in soils.
Key value for chemical safety assessment
Additional information
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.