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EC number: 264-761-2 | CAS number: 64265-45-8
- 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:
- EU Method C.19 (Estimation of the Adsorption Coefficient (KOC) on Soil and Sewage Sludge Using High Performance Liquid Chromatography (HPLC))
- Version / remarks:
- August 21, 2001
- Deviations:
- yes
- Remarks:
- see "Principles of method if other than guideline"
- 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:
- January 22, 2001
- Deviations:
- yes
- Remarks:
- see "Principles of method if other than guideline"
- Principles of method if other than guideline:
- According to guidelines, the determination of the Pow of the test substance should be performed in its non-ionised form. Therefore, the pKa values of the test substance were calculated using Perrin calculation method (pKalc 5.0, module in Pallas 3.0, CompuDrug International). These calculations show that there is not a pH at which all ionisable groups are in their non-ionised form. At pH 2, net charge of the test substance is zero and therfore it was descided to perform a test at this pH. However, this pH was not in the environmentally relevant range of pH 5.0-9.0. Thus, an additional test was performed at neutral pH. Under these conditions, the net charge will deviate from zero.
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- HPLC estimation method
- Media:
- soil/sewage sludge
- Radiolabelling:
- no
- Test temperature:
- 35±5°C
- Details on study design: HPLC method:
- EQUIPMENT
- Apparatus: Alliance Separation Module 2695, detector: Dual λ Absorbance Detector 2487 (Waters), column: 150 mm x 4.6 mm i.d. Hypersil BDS-CN; dp = 5 pm (Thermo, San Jose, CA, USA); column temp.: 35 ± 5.0°C; flow: 1 mL/min; Injection volume: 10 µL
- Detection system: UV detection (210nm)
MOBILE PHASES
Mobile phase pH 2.0: 55/45 (v/v) methanol/0.05 M phosphate buffer at pH 2.0
Mobile phase neutral pH: 55/45 (vlv) methanollMilli-Q water
DETERMINATION OF DEAD TIME
- Method: by inert substance which is not retained by the column (formamide)
REFERENCE SUBSTANCES
- Identity: Phenol, N, N-Dimethylbenzamide, Methylbenzoate, 3,5-Dinitrobenzamide, Naphthalene, Fenthion, Phenanthrene, 2,4-DDT
REPETITIONS
- Number of determinations: duplicates - Details on test conditions:
- A 1294 mg/L or 1482 mg/L stock solution of the test substance was prepared in mobile phase pH 2.0 or mobile phase neutral pH. The test solutions were diluted with mobile phase pH 2.0 or mobile phase neutral pH, to a final concentration corrected for a purity of 50.60% of 253 mg/L. As test substance blank solution mobile phase pH 2.0 or mobile phase neutral pH was used.
- Type:
- log Koc
- Value:
- < 1.32 dimensionless
- pH:
- 7
- Temp.:
- 35 °C
- Remarks on result:
- other: component 1
- Type:
- log Koc
- Value:
- 3.47 dimensionless
- pH:
- 7
- Temp.:
- 35 °C
- Remarks on result:
- other: component 2
- Type:
- log Koc
- Value:
- > 5.63 dimensionless
- pH:
- 7
- Temp.:
- 35 °C
- Remarks on result:
- other: component 3+4+5
- Type:
- log Koc
- Value:
- < 1.32 dimensionless
- pH:
- 2
- Temp.:
- 35 °C
- Remarks on result:
- other: component 1
- Type:
- log Koc
- Value:
- 1.45 dimensionless
- pH:
- 2
- Temp.:
- 35 °C
- Remarks on result:
- other: component 2
- Type:
- log Koc
- Value:
- 3.42 dimensionless
- pH:
- 2
- Temp.:
- 35 °C
- Remarks on result:
- other: component 6
- Type:
- log Koc
- Value:
- 3.57 dimensionless
- pH:
- 2
- Temp.:
- 35 °C
- Remarks on result:
- other: component 7
- Transformation products:
- not measured
- Validity criteria fulfilled:
- yes
- Conclusions:
- The log Koc of Amphopropionate C8 is, for the different components, in the range of < 2.1 to 3.57 at pH 2.0 and < 2.1 to >5.63 at pH 7.0.
- Executive summary:
In a screening study conducted according to OECD Guideline 121 (Estimation of the Adsorption Coefficient (Koc) on Soil and on Sewage Sludge using High Performance Liquid Chromatography (HPLC)) the log Koc value of Amphopropionate C8 was determined at pH 2 and pH 7.
According to guidelines, the determination of the Koc of the test substance should be performed in its non-ionised form. Therefore, the pKa values of the test substance were calculated using Perrin calculation method (pKalc 5.0, module in Pallas 3.0, CompuDrug International). These calculations show that there is not a pH at which all ionisable groups are in their non-ionised form. At pH 2, net charge of the test substance is zero and, thus, the test was performed at this pH. However, because this pH was not in the environmentally relevant range of pH 5.0-9.0, an additional test was performed at neutral pH. Under these conditions, the net charge will deviate from zero.
In the chromatograms of the test substance solutions, several test substance peaks were observed. Some peaks were broad indicating not pure reverse phase retention as required for accurate determination of Koc. Because a different method to determine Koc is not applicable, these values were reported as a range. The log Koc of Amphopropionate C8 is, for the different components, in the range of < 2.1 to 3.57 at pH 2.0 and < 2.1 to >5.63 at pH 7.0.
Reference
Koc at pH 2 |
log Koc at pH 2 |
area% |
Koc at pH7 |
log Koc at pH 7 |
area% |
|
component 1 |
<2.1E1 |
<1.32 |
26 |
<2.1E1 |
<1.32 |
24 |
component 2 |
2.80E+01 |
1.45 |
69 |
2.90E+03 |
3.47 |
1.7 |
component 3 |
2.00E+02 |
2.3 |
0.7 |
>4.3E05 |
>5.63 |
25 |
component 4 |
5.90E+02 |
2.77 |
0.1 |
>4.3E05 |
>5.63 |
3.8 |
component 5 |
1.60E+03 |
3.2 |
0.6 |
>4.3E05 |
>5.63 |
45 |
component 6 |
2.60E+03 |
3.42 |
1.4 |
|||
component 7 |
3.70E+03 |
3.57 |
1.8 |
Description of key information
log Koc < 2.1 to 3.57 at pH 2.0 and < 2.1 to >5.63 at pH 7.0 (OECD TG 121; RL1; GLP)
Key value for chemical safety assessment
- Koc at 20 °C:
- 38.9
Other adsorption coefficients
- Type:
- log Kp (solids-water in soil)
- Value in L/kg:
- -0.11
- at the temperature of:
- 20 °C
Other adsorption coefficients
- Type:
- log Kp (solids-water in sediment)
- Value in L/kg:
- 0.29
- at the temperature of:
- 20 °C
Other adsorption coefficients
- Type:
- log Kp (solids-water in suspended matter)
- Value in L/kg:
- 0.59
- at the temperature of:
- 20 °C
Other adsorption coefficients
- Type:
- log Kp (solids-water in raw sewage sludge)
- Value in L/kg:
- 1.07
- at the temperature of:
- 20 °C
Other adsorption coefficients
- Type:
- log Kp (solids-water in settled sewage sludge)
- Value in L/kg:
- 1.07
- at the temperature of:
- 20 °C
Other adsorption coefficients
- Type:
- log Kp (solids-water in activated sewage sludge)
- Value in L/kg:
- 1.16
- at the temperature of:
- 20 °C
Other adsorption coefficients
- Type:
- log Kp (solids-water in effluent sewage sludge)
- Value in L/kg:
- 1.16
- at the temperature of:
- 20 °C
Additional information
In a screening study conducted according to OECD Guideline 121 (Estimation of the Adsorption Coefficient (Koc) on Soil and on Sewage Sludge using High Performance Liquid Chromatography (HPLC)) the log Koc value of Amphopropionate C8 was determined at pH 2 and pH 7.
According to guidelines, the determination of the Koc of the test substance should be performed in its non-ionised form. Therefore, the pKa values of the test substance were calculated using Perrin calculation method (pKalc 5.0, module in Pallas 3.0, CompuDrug International). These calculations show that there is not a pH at which all ionisable groups are in their non-ionised form. At pH 2, net charge of the test substance is zero and, thus, the test was performed at this pH. However, because this pH was not in the environmentally relevant range of pH 5.0-9.0, an additional test was performed at neutral pH. Under these conditions, the net charge will deviate from zero.
In the chromatograms of the test substance solutions, several test substance peaks were observed. Some peaks were broad indicating not pure reverse phase retention as required for accurate determination of Koc. Because a different method to determine Koc is not applicable, these values were reported as a range. The log Koc of Amphopropionate C8 is, for the different components, in the range of < 2.1 to 3.57 at pH 2.0 and < 2.1 to >5.63 at pH 7.0.
The adsorption coefficients were calculated using EUSES based on log Kow.
[LogKoc: 1.59]
[LogKoc: 1.59]
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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