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EC number: 911-168-8 | 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
Adsorption / desorption
Administrative data
Link to relevant study record(s)
- Endpoint:
- adsorption / desorption: screening
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- March from 23 to 24, 2018
- 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))
- Version / remarks:
- adopted 22nd January 2001
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- HPLC estimation method
- Test temperature:
- 25 °C
- Details on study design: HPLC method:
- HPLC CONDITIONS
- Detector: 200 nm (for the reference items); 373 nm (for the test item)
- Column: LiChrospher 100 CN (5 µm) 250 × 4
- Temperature: 25 °C
- Mobile Phase: Acetonitrile : Water = 45 : 55 (v/v)
- Flow Rate: 1 ml/min
- Injection Volume: 10 µl
REFERENCE SUBSTANCES
Sodium nitrate, Acetanilide, Isoproturon, Naphthalene, 1,2,3-Trichlorobenzene, Fenthion, Pyrazophos and DDT.
TEST SOLUTIONS
The reference items were dissolved in Acetonitrile. The concentrations of the stock solutions were about 1 mg/ml. These stock solutions were diluted with eluent resulting in concentrations of approximately 10 µg/ml.
The test item was dissolved in Tetrahydrofuran. The concentration of the stock solution was about 0.2 mg/ml. This stock solution was diluted with eluent resulting in concentration of approximately 20 µg/ml
PERFORMANCE OF THE TEST
Three series of the reference solutions were measured with two parallel injections, each. Three series of the test item solution were measured with two parallel injections, each. The retention times were determined. The three calibration series and three test item series were measured alternately.
For the determination of t0 (t0 = retention time of the unretarded component) three series of sodium nitrate solution were injected twice. - Type:
- log Koc
- Value:
- > 5.63
- Temp.:
- 25 °C
- Details on results (HPLC method):
- Retention times measured for the three components of the test item (14.09, 15.82 and 17.84 min) are higher than the retention time of the last eluting standard: DDT (12.84 min). This result shows that log Koc of test item is higher than the calibrated range. As DDT is the reference item with the highest Koc value (OECD 121), no further test was performed.
Repeatability (difference of maximum and minimum values of log Koc): the value of log Koc derived from individual measurements fell within a range of 0.25 log units.
Reproducibility: the correlation coefficient R for the relationship between log k and log Koc for a set of the reference items was higher than 0.96.
Accuracy is the difference of the estimated adsorption coefficient to the literature value of reference item. It was within a range of ± 0.5 log units. - Conclusions:
- log Koc > 5.63
- Executive summary:
The estimation of the adsorption coefficient, Koc, has been done using the HPLC method, according to OECD guideline 121.
Three series of the reference solutions were measured with two parallel injections, each. Three series of the test item solution were measured with two parallel injections, each. The retention times were determined. The three calibration series and three test item series were measured alternately.
For the determination of t0 (t0 = retention time of the unretarded component) three series of sodium nitrate solution were injected twice.
The adsorption coefficient Koc was determined based on a calibration curve using 7 reference items. The capacity factors (k) were calculated from the dead time and retention times of the reference items. The log k data of the reference items were plotted against their log Koc values.
Retention times measured for the three components of the test item are higher than the retention time of the last eluting standard: DDT (12.84 min). This result shows that log Koc of test item is higher than the calibrated range. As DDT is the reference item with the highest Koc value (OECD 121), no further test was performed.
Conclusion
log Koc > 5.63
Reference
TEST ITEM
Test Item | Retention time (min) | log k Calculated | RepeatabilityΔlog Koc log unit | Accuracy log unit | log Koc Calculated |
Test item (Constituent 1) | 14.09 | not calculated | |||
14.09 | |||||
14.09 | |||||
14.08 | |||||
14.1 | |||||
14.11 | |||||
Mean | 14.09 | ||||
CV % | 0.07 | ||||
Test item (Constituent 2) | 15.82 | not calculated | |||
15.81 | |||||
15.81 | |||||
15.8 | |||||
15.84 | |||||
15.84 | |||||
Mean | 15.82 | ||||
CV % | 0.11 | ||||
Test item (Constituent 3) | 17.83 | not calculated | |||
17.87 | |||||
17.76 | |||||
17.85 | |||||
17.81 | |||||
17.91 | |||||
Mean | 17.84 | ||||
CV % | 0.29 |
REFERENCE SUBSTANCES
Chemical name | log Koc OECD 121 | Retention time (min) | log k Calculated | Repeatability Δlog Koc log unit | Accuracy log unit | log Koc Calculated |
Sodium nitrate | - | 1.13 | - | |||
1.13 | ||||||
1.11 | ||||||
1.11 | ||||||
1.1 | ||||||
1.1 | ||||||
Mean | 1.11 | |||||
CV % | 1.23 | |||||
Acetanilide | 1.25 | 3.38 | 0.309 | 0 | 0.27 | 0.98 |
3.38 | 0.309 | 0.98 | ||||
3.38 | 0.309 | 0.98 | ||||
3.38 | 0.309 | 0.98 | ||||
3.38 | 0.309 | 0.98 | ||||
3.38 | 0.309 | 0.98 | ||||
Mean | 3.38 | 0.309 | 0.98 | |||
CV % | 0 | - | - | |||
Isoproturon | 1.86 | 4.38 | 0.467 | 0 | 0.14 | 2 |
4.38 | 0.467 | 2 | ||||
4.38 | 0.467 | 2 | ||||
4.38 | 0.467 | 2 | ||||
4.38 | 0.467 | 2 | ||||
4.38 | 0.467 | 2 | ||||
Mean | 4.38 | 0.467 | 2 | |||
CV% | 0 | - | - | |||
Naphthalene | 2.75 | 5.62 | 0.607 | 0.01 | 0.13 | 2.89 |
5.62 | 0.607 | 2.89 | ||||
5.61 | 0.606 | 2.88 | ||||
5.61 | 0.606 | 2.88 | ||||
5.61 | 0.606 | 2.88 | ||||
5.61 | 0.606 | 2.88 | ||||
Mean | 5.61 | 0.607 | 2.88 | |||
CV % | 0.09 | - | - | |||
1,2,3-Trichlorobenzene | 3.16 | 5.94 | 0.637 | 0.01 | 0.08 | 3.08 |
5.95 | 0.638 | 3.08 | ||||
5.94 | 0.637 | 3.08 | ||||
5.94 | 0.637 | 3.08 | ||||
5.94 | 0.637 | 3.08 | ||||
5.94 | 0.637 | 3.08 | ||||
Mean | 5.94 | 0.637 | 3.08 | |||
CV % | 0.07 | - | - | |||
Fenthion | 3.31 | 7.13 | 0.733 | 0.01 | 0.37 | 3.69 |
7.13 | 0.733 | 3.69 | ||||
7.11 | 0.731 | 3.68 | ||||
7.11 | 0.731 | 3.68 | ||||
7.11 | 0.731 | 3.68 | ||||
7.11 | 0.731 | 3.68 | ||||
Mean | 7.12 | 0.732 | 3.68 | |||
CV % | 0.15 | - | - | |||
Pyrazophos | 3.65 | 6.64 | 0.696 | 0.01 | 0.2 | 3.45 |
6.63 | 0.695 | 3.45 | ||||
6.62 | 0.694 | 3.44 | ||||
6.62 | 0.694 | 3.44 | ||||
6.62 | 0.694 | 3.44 | ||||
6.62 | 0.694 | 3.44 | ||||
Mean | 6.63 | 0.695 | 3.45 | |||
CV % | 0.13 | - | - | |||
DDT | 5.63 | 12.85 | 1.023 | 0.01 | 0.09 | 5.54 |
12.85 | 1.023 | 5.54 | ||||
12.82 | 1.022 | 5.53 | ||||
12.82 | 1.022 | 5.53 | ||||
12.84 | 1.023 | 5.54 | ||||
12.84 | 1.023 | 5.54 | ||||
Mean | 12.84 | 1.022 | 5.54 | |||
CV % | 0.11 | - | - |
Description of key information
log Koc > 5.63
Key value for chemical safety assessment
Additional information
The estimation of the adsorption coefficient, Koc, has been performed using the HPLC method, according to the OECD guideline 121. Three series of the reference solutions and test item were measured with two parallel injections, each. The three calibration series and three test item series were measured alternately. The adsorption coefficient Koc was determined based on a calibration curve using 7 reference items. The capacity factors (k) were calculated from the dead time and retention times of the reference items. The log k data of the reference items were plotted against their log Koc values.
Retention times measured for the three components of the test item are higher than the retention time of the last eluting standard: DDT (12.84 min). This result shows that log Koc of test item is higher than the calibrated range. As DDT is the reference item with the highest Koc value (OECD 121), no further test was performed.
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