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EC number: 218-345-2 | CAS number: 2128-93-0
- 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:
- 06 July to 19 September 2017 (experimental dates)
- 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:
- 22/01/2001
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- HPLC estimation method
- Media:
- other: n-octanol/water partition coefficient
- Specific details on test material used for the study:
- SOURCE OF TEST MATERIAL
- Batch No.of test material: 20161118
- Expiration date of the lot/batch: 17/11/2017
- Purity test date: 18/11/2016
- Purity: 99.74%
-Appearance: white to off white crystaline powder.
STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: Room temperature protected from light
- Stability under test conditions: No data
TREATMENT OF TEST MATERIAL PRIOR TO TESTING
- Treatment of test material prior to testing: Not applicable
- Preliminary purification step (if any): - Radiolabelling:
- no
- Test temperature:
- 35oC
- Details on study design: HPLC method:
- EQUIPMENT
- Apparatus: Acquity UPLC system
- Type, material and dimension of analytical (guard) column: Acquity UPLC BEH C18 (100mm x 2.1 mm id)
- Detection system: Acquity UPLC TUV
MOBILE PHASES
- Type: Methanol:water, 55:45 v/v
- Experiments with additives carried out on separate columns: no
- pH: neutral
- Solutes for dissolving test and reference substances:
DETERMINATION OF DEAD TIME
- Method: by inert substances which are not retained by the column
REFERENCE SUBSTANCES
Acetanilide (99.8%)
Monuron (99.9%)
2,5-dichloroaniline (99.9%)
Naphthalene (99.5%)
Benzoic acid phenylester (99.9%)
Fenthion (97.5%)
4,4-DDT (98.7%)
DETERMINATION OF RETENTION TIMES
- Quantity of test substance introduced in the column: 5 uL of ~1 g/L
- Quantity of reference substances: 5 uL of 10 mg/L (nominal)
- Intervals of calibration: No data
REPETITIONS
- Number of determinations: duplicate injections
EVALUATION
- Calculation of capacity factors k':
- Calculation of retention times:
- Determination of the log Koc value: - Analytical monitoring:
- no
- Details on sampling:
- Not applicable
- Details on matrix:
- Not applicable
- Details on test conditions:
- Not applicable
- Key result
- Sample No.:
- #1
- Type:
- Koc
- Value:
- >= 37 000 dimensionless
- Temp.:
- 35 °C
- Key result
- Sample No.:
- #1
- Type:
- log Koc
- Value:
- >= 4.57 dimensionless
- Temp.:
- 35 °C
- Details on results (HPLC method):
- - Retention times of reference substances used for calibration:
Substance Retention time (min)
T1 T2 Mean
Acetanilide 0.903 0.903
Monuron 1.100 1.100
2,5-Dichloroaniline 1.246 1.246
Naphthalene 1.442 1.442
Benzoic acid phenylester 1.690 1.687
Fenthion 2.231 2.233
Phenanthrene 2.470 2.468
4,4’-DDT 5.901 5.878
- Details of fitted regression line (log k' vs. log Koc): least squares method
- Average retention data for test substance: 3.442 mins - Transformation products:
- not measured
- Validity criteria fulfilled:
- yes
- Conclusions:
- At neutral pH the Koc was determined to be 3.7 x 10'4 and the log Koc was 4.57
- Executive summary:
A study was performed to assess the adsorption coefficient of the test substance according to the OECD guideline 121 (Partition coefficient (n-octanol/water) by high performance liquid chromatography (HPLC) method), in compliance with GLP. Linear regression analysis using the least squares method was used. The log Koc value to the test substance was calculated by substituting the mean log k’ in the calibration curve. The calibration curve was calculated using linear regression method.
At neutral pH, the Koc was determined to be 3.7 x 104and the log Koc was 4.57.
All acceptability criteria were met, therefore, this study was considered to be valid.
Reference
Substance |
Purity (%) |
Retention time (min) |
log Koc |
Koc |
||
T1 |
T2 |
Mean |
||||
Formamide (t0) |
99.2% |
0.694 |
0.693 |
0.694 |
|
|
Acetanilide |
99.8% |
0.903 |
0.903 |
|
1.26 |
|
Monuron |
99.9% |
1.100 |
1.100 |
|
1.99 |
|
2,5-Dichloroaniline |
99.9% |
1.246 |
1.246 |
|
2.55 |
|
Naphthalene |
99.5% |
1.442 |
1.442 |
|
2.75 |
|
Benzoic acid phenylester |
99.9% |
1.690 |
1.687 |
|
2.87 |
|
Fenthion |
97.5% |
2.231 |
2.233 |
|
3.31 |
|
Phenanthrene |
98.1% |
2.470 |
2.468 |
|
4.09 |
|
4,4’-DDT |
98.7% |
5.901 |
5.878 |
|
5.63 |
|
Test item |
99.7 |
3.439 |
3.445 |
3.442 |
4.57 |
3.7´104 |
Description of key information
A reliable and valid study was performed to assess the adsorption coefficient of the test substance according to the OECD guideline 121 (Partition coefficient (n-octanol/water) by high performance liquid chromatography (HPLC) method). At neutral pH, at 35 ˚C the Koc was determined to be 37,000 and the log Koc was 4.57.
Key value for chemical safety assessment
- Koc at 20 °C:
- 4.57
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.
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