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Diss Factsheets
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EC number: - | CAS number: -
- 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
![](https://echa.europa.eu/o/diss-blank-theme/images/factsheets/A-REACH/factsheet/print_environmental-fate-and-pathways.png)
Adsorption / desorption
Administrative data
- Endpoint:
- adsorption / desorption: screening
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- Phys chem testing was conducted between 10 March 2011 and 12 April 2012
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Study conducted to GLP and in compliance with agreed protocols, with no or minor deviations from standard test guidelines and/or minor methodological deficiencies, which do not effect the quality of the relevant results.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 011
- Report date:
- 2011
Materials and methods
Test guidelineopen allclose all
- 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
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.19 (Estimation of the Adsorption Coefficient (KOC) on Soil and Sewage Sludge Using High Performance Liquid Chromatography (HPLC))
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- HPLC estimation method
Test material
- Test material form:
- solid: particulate/powder
- Remarks:
- migrated information: powder
- Details on test material:
- Identification: TM10-099
Description: dark blue powder
Batch number: MB-1
Date received: 4 March 2011
Expiry date: 4 March 2012
Storage conditions: room temperature in the dark
Constituent 1
- Radiolabelling:
- no
Study design
- Test temperature:
- Column temperature: 30°C
HPLC method
- Details on study design: HPLC method:
- EQUIPMENT
- Apparatus: Agilent Technologies 1100, incorporating workstation
- Type, material and dimension of analytical (guard) column: Optimal CN 5µm (150 x 4.6 mm id)
- Detection system: UV
MOBILE PHASES
- Type: methanol:reverse osmosis water (55:45 v/v)
- pH: 7.8
- Solutes for dissolving test and reference substances: mobile phase (test substance), methanol (reference substances)
DETERMINATION OF DEAD TIME
- Method: by inert substances which are not retained by the column
REFERENCE SUBSTANCES
- Identity: Acetanilide, Phenol, Atrazine, lsoproturon, Triadimenol, Linuron, Naphthalene, Endosulfan-diol, Fenthion, α-Endosulfan, Phenanthrene, Diclofop-methyl, DDT
DETERMINATION OF RETENTION TIMES
- Quantity of test substance introduced in the column: not reported
- Quantity of reference substances: not reported
- Intervals of calibration: log Koc of reference substances between 1.25 - 5.63.
REPETITIONS
- Number of determinations: 2
EVALUATION
- Calculation of capacity factors k:
k =(tR -t0)/t0, where
tR: retention time of the test substance
t0: column dead time
- Calculation of retention times: Measured
- Determination of the log Koc value:
Log10 Koc = (Log10 k - A)/B
where:
Koc: adsorption coefficient
k: capacity factor
A: intercept of the calibration curve
B: slope of the calibration curve
Results and discussion
Adsorption coefficientopen allclose all
- Type:
- Koc
- Value:
- < 17.8
- Temp.:
- 30 °C
- Remarks on result:
- other: Column temperature
- Type:
- log Koc
- Value:
- < 1.25
- Temp.:
- 30 °C
- Remarks on result:
- other: Column temperature
Results: HPLC method
- Details on results (HPLC method):
- - Retention times of reference substances used for calibration:
Acetanilide: 2.506
Phenol: 2.522
Atrazine: 2.867
lsoproturon: 3.126
Triadimenol: 3.673
Linuron: 4.170
Naphthalene: 3.946
Endosulfan-diol: 5.000
Fenthion: 6.071
α-Endosulfan: 7.004
Phenanthrene: 6.255
Diclofop-methyl: 6.997
DDT: 12.899
- Details of fitted regression line (log k' vs. log Koc):
Intercept= -0.863
Slope= 0.306
r=0.973
- Graph of regression line attached: yes
- Average retention data for test substance: 2.001 mins
Any other information on results incl. tables
Adsorption coefficient of sample:
The retention times, capacity factors and log10 Koc values determined for the sample are shown in the following table:
Injection |
Retention Time (mins) |
Capacity Facotr (k) |
Log10K |
Log10Koc |
1 |
1.026 |
<0.253 |
<-0.597 |
<1.25 |
2 |
1.028 |
<0.253 |
<-0.597 |
<1.25 |
Discussion
The method guideline states that the measurement of adsorption coefficient should be carried out on substances in their ionised and unionised forms. However, since the test item contained numerous sulphonic acid salt groups, it was impossible to satisfy this criterion. Therefore testing was carried out at approximately neutral pH with the test item in an ionised state.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Conclusions:
- The adsorption coefficient (Koc) of the test item has been determined to be less than 17.8, log10 Koc < 1.25.
- Executive summary:
The adsorption coefficient of the test item TM10-099 was determined in a valid GLP study. A HPLC screening method was used which was designed to be compatible with OECD TG No 121.
Test item (0.1001 g) was diluted with mobile phase and its retention time was determined in duplicate by HPLC. The method guideline states that the measurement of adsorption coefficient should be carried out on substances in their ionised and unionised forms. However, since the test item contained numerous sulphonic acid salt groups, it was impossible to satisfy this criterion. Therefore testing was carried out at approximately neutral pH with the test item in an ionised state.
The adsorption coefficient (Koc) of the test item has been determined to be less than 17.8, log10 Koc < 1.25.
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.
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