Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 911-616-2 | CAS number: -
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:
- 28 April 2010 - 2 June 2010
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- 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/sewage sludge
- Radiolabelling:
- no
- Analytical monitoring:
- yes
- Details on sampling:
- Determination of adsorption equilibrium (kinetics experiment):
- Concentration: 2 mg/L
- Sampling interval: 2, 4, 6 and 24 h
Determination of adsorption isotherms:
- Concentrations: 0.05 - 0.2 - 1 - 2 - 5 mg/L
- Sampling interval: 6 h - Details on matrix:
- Details on sludge
MAASKANT SLUDGE
Location: Waterschap de Maaskant, 's-Hertogenbosch, The Netherlands
Particle size distribution:
- Fraction < 2 μm: 58% w/w
- Fraction 2μm – 50 μm: 15% w/w
- Fraction 50 μm – 2 mm: 27% w/w
Organic matter: 78.1% w/w
Organic carbon: 45.3% w/w
Cation exchange capacity: 71 meq/100g
pH (0.01M CaCl2): 4.9
Sampling date: 13 May 2009
Storage (dried sludge): Ambient temperature
Expiry date:13 May 2010
Details on soil
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: F221609
Field sampling date: 14 April 2009
Received from: Landwirtschaftliche Untersuchungs- und Forschungsanstalt Speyer, Obere Langgasse 40, 67346 Speyer, Germany
Sieved/air dried on: 20 April 2009/10 July 2009
Storage: Ambient temperature after air drying
Expiry date: 14 April 2012
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: 3.0
% 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: F6S1609
Field sampling date: 15 April 2009
Received from: Landwirtschaftliche Untersuchungs- und Forschungsanstalt Speyer, Obere Langgasse 40, 67346 Speyer, Germany
Sieved/air dried on: 21 April 2009/ 10 July 2009
Storage: Ambient temperature after air drying
Expiry date: 15 April 2012 - 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 sludge/soil and water per treatment: 0.09 g sludge or 0.9 g soil and 45 mL 0.01 M CaCl2 solution
- Sludge:solution ratio: 1:500
- Soil:solution ratio: 1:50
- 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).
- Type:
- Koc
- Value:
- 46 549
- Temp.:
- 20 °C
- % Org. carbon:
- 45.3
- Remarks on result:
- other: Maaskant sludge; based upon Sodium methyl 2-sulphohexadecanoate
- Type:
- Koc
- Value:
- 182 843
- Temp.:
- 20 °C
- % Org. carbon:
- 45.3
- Remarks on result:
- other: Maaskant sludge; based upon Sodium methyl 2-sulphooctadecanoate
- Type:
- Koc
- Value:
- 4 687.4
- Temp.:
- 20 °C
- % Org. carbon:
- 2.16
- Remarks on result:
- other: Speyer 2.2 soil; based upon Sodium methyl 2-sulphohexadecanoate
- Type:
- Koc
- Value:
- 221 668
- Temp.:
- 20 °C
- % Org. carbon:
- 2.16
- Remarks on result:
- other: Speyer 2.2 soil; based upon Sodium methyl 2-sulphooctadecanoate
- Type:
- Koc
- Value:
- 9 973.5
- Temp.:
- 20 °C
- % Org. carbon:
- 1.75
- Remarks on result:
- other: Speyer 6S soil; based upon Sodium methyl 2-sulphohexadecanoate
- Type:
- Koc
- Value:
- 75 823
- Temp.:
- 20 °C
- % Org. carbon:
- 1.75
- Remarks on result:
- other: Speyer 6S soil; based upon Sodium methyl 2-sulphooctadecanoate
- Validity criteria fulfilled:
- yes
- Conclusions:
- Adsorption of MIZULAN FL-80 on sludge and soil could be described by the Freundlich equation. Freundlich adsorption coefficients are summarised in the table below.
Test system Texture % OC KF,oc (mL/g)* KF,oc (mL/g)**
Maaskant sludge 45.3 46549 182843
Speyer 2.2 loamy sand 2.16 4687.4 221668
Speyer 6S clay 1.75 9973.5 75823
Mean of soils 7330.5 148745
* based upon Sodium methyl 2-sulphohexadecanoate
** based upon Sodium methyl 2-sulphooctadecanoate
Reference
Description of key information
The adsorption behaviour of MIZULAN FL-80 was studied in one sludge and two soils.Adsorption was studied using the batch equilibrium method and calculated as the difference between the initial test substance concentration and the concentration at sampling. Conclusions of the adsorption kinetics test were based upon the results of the analysis of Sodium methyl 2-sulphohexadecanoate. In the adsorption isotherm experiment results of the analysis on both components were used. Adsorption kinetics was determined at an initial MIZULAN FL-80 concentration of approximately 2 mg/L. Equilibrium was reached after 6 hours. Under the experimental conditions MIZULAN FL-80 was stable for at least 6 hours. Adsorption isotherms were determined over a MIZULAN FL-80 concentration range from approximately 0.05 to 5.0 mg/L and an equilibration time of 6 hours. MIZULAN FL-80 adsorption isotherms could be described by the Freundlich equation.
Key values for CSA:
The mean Koc for soils for C16MES was determined as 7330 (logKoc 3.87)
Key value for chemical safety assessment
- Koc at 20 °C:
- 7 330
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
