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EC number: 434-770-8 | CAS number: 55314-16-4
Adsorption / desorption
Administrative data
- Endpoint:
- adsorption / desorption: screening
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 15 April 2009 - 19 May 2009
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: This study has been performed according to OECD and EC guidelines and according to GLP principles.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 009
- Report date:
- 2009
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 106 (Adsorption - Desorption Using a Batch Equilibrium Method)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- batch equilibrium method
- Media:
- soil
Test material
- Reference substance name:
- -
- EC Number:
- 434-770-8
- EC Name:
- -
- Cas Number:
- 55314-16-4
- Molecular formula:
- C10 H12 N2 O1
- IUPAC Name:
- 3-(dimethylamino)-1-(pyridin-3-yl)prop-2-en-1-one
- Details on test material:
- Identification: Pyrenamine (AMN107 B4)
Molecular formula: C10H12N2O
Molecular weight: 176.22
Description: Yellow-orange granules (determined at NOTOX)
Batch: R0215
Purity: 100.10%
Test substance storage: At room temperature in the dark
Stability under storage conditions: Stable
Expiry date: 21 October 2009
Constituent 1
- Radiolabelling:
- no
Study design
- Test temperature:
- 20 +/- 2°C
Batch equilibrium or other method
- Analytical monitoring:
- yes
- Details on sampling:
- Determination of adsorption equilibrium (kinetics experiment):
- Concentration: 10 mg/L
- Sampling interval: 3, 6, 24 and 48 h
Determination of adsorption isotherms:
- Concentrations: 0.2 - 1 - 4 - 10 - 20 mg/L
- Sampling interval: 24 h
- Details on matrix:
- SPEYER 2.2 SOIL
Name: Speyer standard soil type 2.2 (Speyer 2.2)
Location: Rheinland-Pfalz / Hanhofen, Germany, “Grosser Striet”, Nr. 585
Texture (USDA): Loamy sand
Horizon: 0-20 cm
pH-CaCl2: 5.4
% organic matter: 3.72
% organic carbon: 2.16
Particle size distribution (USDA):
% clay (< 2 µm): 6.4
% silt (2-50 µm): 12.2
% sand (50-2000 µm): 81.4
Cation Exchange Capacity (CEC) (meq/100g): 10
Water holding capacity (%): 48.2
Batch number: F222008
Field sampling date: 15 May 2008
Received from: Landwirtschaftliche Untersuchungs- und Forschungsanstalt Speyer, Obere Langgasse 40, 67346 Speyer, Germany
Sieved/air dried on: 8 September 2008
Storage: Refrigerated after receipt at NOTOX, ambient temperature after sieving/air drying
Expiry date: 15 May 2011
SPEYER 2.3 SOIL
Name: Speyer standard soil type 2.3 (Speyer 2.3)
Location: Germany / Rheinland-Pfalz / Offenbach, “Im Bildgarten”, Nr. 570
Texture (USDA): Sandy loam
Horizon: 0-20 cm
pH-CaCl2: 6.4
% organic matter: 1.69
% organic carbon: 0.98
Particle size distribution (USDA):
% clay (< 2 µm): 9.4
% silt (2-50 µm): 29.8
% sand (50-2000 µm): 60.8
Cation Exchange Capacity (CEC) (meq/100g): 8
Water holding capacity (%): 34.4
Batch number: F232008
Field sampling date: 13 May 2008
Received from: Landwirtschaftliche Untersuchungs- und Forschungsanstalt Speyer, Obere Langgasse 40, 67346 Speyer, Germany
Sieved/air dried on: 8 September 2008
Storage: Refrigerated after receipt at NOTOX, ambient temperature after sieving/air drying
Expiry date: 13 May 2011
SPEYER 6S SOIL
Name: Speyer standard soil type 6S (Speyer 6S)
Location: Germany / Rheinland-Pfalz / Siebeldingen, “In der unteren Hohnert”, Nr. 3412
Texture (USDA): Clay
Horizon: 0-20 cm
pH-CaCl2: 7.2
% organic matter: 3.02
% organic carbon: 1.75
Particle size distribution (USDA):
% clay (< 2 µm): 42.1
% silt (2-50 µm): 36.0
% sand (50-2000 µm): 21.9
Cation Exchange Capacity (CEC) (meq/100g): 22
Water holding capacity (%): 40.7
Batch number: F6S2208
Field sampling date: 28 May 2008
Received from: Landwirtschaftliche Untersuchungs- und Forschungsanstalt Speyer, Obere Langgasse 40, 67346 Speyer, Germany
Sieved/air dried on: 8 September 2008
Storage: Refrigerated after receipt at NOTOX, ambient temperature after sieving/air drying
Expiry date: 28 May 2011 - Details on test conditions:
- TEST SYSTEM
- Type, size and further details on reaction vessel: 50 mL glass containers
- Solution: 0.01 M CaCl2 solution (1.47 g calcium chloride dihydrate/L Milli-Q water)
- Amount of soil and water per treatment: 8 g soil and 40 mL and 0.01 M CaCl2 solution
- Soil:solution ratio: 1:5
- Number of reaction vessels/concentration: 1 vessel per sampling event (kinetics experiment); 2 per concentration (isotherm experiment)
- Computational methods:
- The Freundlich adsorption and desorption isotherm parameters were calculated by fitting the Freundlich isotherm to the data. Optimisations were performed using the program ModelMaker (AP Benson, Wallingford, Oxfordshire, UK).
Results and discussion
Adsorption coefficientopen allclose all
- Type:
- Koc
- Value:
- 224
- Temp.:
- 20 °C
- % Org. carbon:
- 2.16
- Remarks on result:
- other: Speyer 2.2 soil
- Type:
- Koc
- Value:
- 222
- Temp.:
- 20 °C
- % Org. carbon:
- 0.98
- Remarks on result:
- other: Speyer 2.3 soil
- Type:
- Koc
- Value:
- 170
- Temp.:
- 20 °C
- % Org. carbon:
- 1.75
- Remarks on result:
- other: Speyer 6S soil
Any other information on results incl. tables
Adsorption isotherms for Pyrenamine adsorption on soil
Soil name |
Replicate |
Initial conc. (mg/L) |
Caqads(eq)1 (mg/L) |
Csads(eq)2 (mg/kg) |
Kd (L/kg) |
pH |
Speyer2.2 |
A1 |
0.200 |
0.0805 |
0.603 |
7.48 |
6.2 |
|
A2 |
0.199 |
0.0763 |
0.618 |
8.10 |
|
|
B1 |
1.02 |
0.493 |
2.65 |
5.38 |
|
|
B2 |
0.999 |
0.477 |
2.62 |
5.50 |
|
|
C1 |
4.00 |
2.29 |
8.53 |
3.72 |
|
|
C2 |
3.98 |
2.24 |
8.74 |
3.90 |
|
|
D1 |
10.0 |
6.51 |
17.9 |
2.74 |
|
|
D2 |
10.00 |
6.31 |
18.6 |
2.95 |
|
|
E1 |
19.9 |
13.4 |
32.5 |
2.43 |
6.4 |
|
E2 |
19.9 |
14.0 |
29.4 |
2.10 |
|
Speyer2.3 |
A1 |
0.188 |
0.0751 |
0.244 |
3.25 |
6.5 |
|
A2 |
0.191 |
0.0752 |
0.244 |
3.24 |
|
|
B1 |
0.996 |
0.461 |
1.08 |
2.35 |
|
|
B2 |
0.989 |
0.467 |
1.06 |
2.28 |
|
|
C1 |
3.99 |
2.16 |
3.72 |
1.72 |
|
|
C2 |
3.97 |
2.13 |
3.73 |
1.75 |
|
|
D1 |
9.94 |
6.42 |
7.17 |
1.12 |
|
|
D2 |
9.93 |
6.27 |
7.44 |
1.19 |
|
|
E1 |
19.9 |
13.9 |
12.1 |
0.868 |
6.8 |
|
E2 |
25.4 |
18.5 |
14.5 |
0.785 |
|
Speyer6S |
A1 |
0.198 |
0.106 |
0.478 |
4.51 |
6.8 |
|
A2 |
0.264 |
0.104 |
0.629 |
6.05 |
|
|
B1 |
0.992 |
0.583 |
2.13 |
3.66 |
|
|
B2 |
0.993 |
0.573 |
2.17 |
3.79 |
|
|
C1 |
3.95 |
2.70 |
6.56 |
2.43 |
|
|
C2 |
3.94 |
2.46 |
7.69 |
3.12 |
|
|
D1 |
9.92 |
7.23 |
14.1 |
1.96 |
|
|
D2 |
9.89 |
7.10 |
14.4 |
2.03 |
|
|
E1 |
19.8 |
14.6 |
27.0 |
1.85 |
6.9 |
|
E2 |
20.0 |
14.6 |
27.7 |
1.90 |
|
1. Concentration of Pyrenamine in the supernatant (measured).
2. Concentration of Pyrenamine in the soil (calculated).
Applicant's summary and conclusion
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