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EC number: 630-399-2 | CAS number: 130169-56-1
- 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
- Endpoint:
- adsorption / desorption: screening
- Type of information:
- migrated information: read-across based on grouping of substances (category approach)
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP Guideline study
Cross-reference
- Reason / purpose for cross-reference:
- reference to same study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 000
- Report date:
- 2000
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 106 (Adsorption - Desorption Using a Batch Equilibrium Method)
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- batch equilibrium method
- Media:
- other: soil sediment and sludge
Test material
- Reference substance name:
- Octadecylamine
- EC Number:
- 204-695-3
- EC Name:
- Octadecylamine
- Cas Number:
- 124-30-1
- IUPAC Name:
- octadecan-1-amine
- Details on test material:
- Test substance: Octadecylamine, 14C-labelled (NOTOX test substance 98487)
Constituent 1
- Radiolabelling:
- yes
Study design
- Test temperature:
- 20°C ± 2°C
Batch equilibrium or other method
- Analytical monitoring:
- yes
- Details on matrix:
- SOIL 1: SSLRC Standard soil No 164 (Cranfield 164)
- Geographic location: Farditch Farm, Buxton, Derbyshire, United Kingdom. OS map reference
SK104691
PROPERTIES
- Soil texture:
- Particle size distribution(USDA):
% silt (2-53 μm): 63.24
% sand (53-2000 μm): 15.00
% clay (< 2 μm): 20.04
- Particle size distribution (DIN)
% silt (2-63 μm): 70.08
% sand (63-2000 μm): 9.87
% clay (< 2 μm): 20.04
- Horizon: 10-20 cm
- pH: 6.3-6.8
- Organic carbon (%): 3.8
- CEC (meq/100 g): 21.8
SOIL 2: SSLRC Standard soil No 266 (Cranfield 266)
- Geographic location: Posher Farm, Ufton, Warwicks, United Kingdom. OS map reference SP
37076231
PROPERTIES
- Soil texture:
- Particle size distribution(USDA):
% clay (< 2 μm) 50.17
% silt (2-53 μm) 29.00
% sand (53-2000 μm) 20.84
- Particle size distribution (DIN)
% clay (< 2 μm) 51.63
% silt (2-63 μm) 29.77
% sand (63-2000 μm) 18.60
- Horizon: 0-20 cm
- pH: 7.4-8.6
- Organic carbon (%): 1.5
- CEC (meq/100 g): 23.1
SEDIMENT:
- Details on collection: The sediment was sampled from Oostvaardersplassen (OVP) on May 10, 2000. Oostvaardersplassen
is an area endiked from the lake IJssel (IJsselmeer), situated near Lelystad, The Netherlands. The lake
has been closed for river Rhine water for approximately 35 years.
- Textural classification (i.e. %sand/silt/clay): silt loam (% clay (< 2 μm): 18.70, % silt (2 μm – 63 μm): 69.02, % sand (63 μm – 2 mm): 12.28)
- pH: 7.6 - 8.0
- Organic carbon (%): 2.4
- CEC (meq/100 g): 13.6
SEWAGE SLUDGE:
- Type of sludge:
- Source of sludge: The sewage sludge was sampled from the municipal wastewater treatment plant Waterschap De
Maaskant in ’s-Hertogenbosch, The Netherlands on May 15, 2000 from a basin containing so-called
return sludge, which had been thickened two to three times
- Oxygen status:
Texture: Silty Clay
% clay (< 2 μm): 45.93
% silt (2 μm – 63 μm): 51.57
% sand (63 μm – 2 mm): 2.50
% organic carbon: 30.1
% organic matter: 51.9
pH-H2O: 7.2
pH-CaCl2: 6.8
CEC (meq/100g): 54.9 - Details on test conditions:
- TEST CONDITIONS
- other: Prior to the start of all adsorption-desorption experiments, a precisely known amount of approximately
100 mg of soil or sediment or approximately 1000 mg of sludge was weighed out in glass vials and a
known amount of approximately 10 mL (soil and sediment) or 9 mL (sludge) of 0.01 M aqueous CaCl2
solution was added. The vials were sealed and placed on a shaker for at least 16 hours for preequilibration.
Soils were equilibrated at 20°C ± 2°C.
Results and discussion
Any other information on results incl. tables
Octadecylamine can be considered immobile in Cranfield 164 silt loam soil, Cranfield 266 clay soil, Oostvaardersplassen sediment silt loam and sewage sludge DB1 silty clay.
Table 1: K (F, o,)ads values, optained from Freundlich adsorption isotherm, were:
Test system |
K (F, om) ads [µg^1 -1/n(cm³)^1/n g^-1] |
1/n |
Cranfield 164 |
46437 |
1.5384 |
Cranfield 266 |
1155884 |
1.8897 |
Sediment OVP |
155466 |
1.4478 |
Sludge DB 1 |
1583 |
1.0322 |
for all test systems r² > 0.96
Table 2: Desorption kinetics:
Test system |
% desorption after 47 hours |
% desorped after 166 hours |
Cranfield 164 |
24.4 |
24.2 |
Cranfield 266 |
13.7 |
19.1 |
Sediment OVP |
No result |
16.6 |
Sludge DB 1 |
5.7 |
No result |
The result clearly show that octadecylamine desorption occurs to a lesser extent than adsorption and is slower than adsorption for all test systems.
Applicant's summary and conclusion
- Executive summary:
The adsorption behaviour of octadecylamine in soils, sediment and sludge was studied in two soils, one sediment and one sewage sludge: Cranfield 164 soil [21.8% clay, 6.6% organic matter, silt loam], Cranfield 266 soil [50.2% clay, 2.6% organic matter, clay], Oostvaardersplassen sediment [18.7% clay, 4.1% organic matter, silt loam] and sewage sludge DB1 [45.9% clay, 51.9 % organic matter, silty clay]. These test systems encompass a range of % clay and % organic material. Because of the strong adsorption of octadecylamine on the container materials, an alternative set-up for performance of the study was developed. In this method, activity was determined in the supernatant and on the container walls. Activity adsorbed to the test system was calculated from these results and the initial activity applied. Adsorption and desorption kinetics were determined at an initial concentration of approximately 1 μg/mL. Adsorption isotherms were determined over a concentration range from approximately 0.04 to 5 μg/mL. All adsorption-desorption experiments were carried out at 20°C ± 2°C. Mass balances thus obtained for the adsorption isotherm experiment were all > 90%, indicating the validity of the test set-up. Octadecylamine can be considered immobile in Cranfield 164 silt loam soil, Cranfield 266 clay soil, Oostvaardersplassen sediment silt loam and sewage sludge DB1 silty clay. KF,o m ads values, obtained from the Freundlich adsorption isotherm, were 46*103 μg1-1/n(cm3)1/ng-1 (Cranfield 164 silt loam, 1/n = 1.5384), 1.2*106 μg1-1/n(cm3)1/ng-1 (Cranfield 266 clay, 1/n = 1.8897), 1.6*105 μg1-1/n(cm3)1/ng-1 (Oostvaardersplassen sediment silt loam, 1/n = 1.4478) and 1.6*103 μg1-1/n(cm3)1/ng-1 (sewage sludge DB1 silty clay, 1/n = 1.0322). For all test systems r2 > 0.96.
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