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EC number: 236-291-8 | CAS number: 13282-70-7
- 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:
- 2015-05-11 to 2015-11-02
- 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)
- Version / remarks:
- 2000
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- batch equilibrium method
- Media:
- soil
- Test temperature:
- NS
- Details on study design: HPLC method:
- NA
- Analytical monitoring:
- yes
- Details on sampling:
- - Concentrations: 100 mg/L
- Sampling interval: after 2, 4 and 6 h contact time.
- Sample storage before analysis:NS - Matrix no.:
- #1
- Matrix type:
- loam
- % Org. carbon:
- 6.54
- pH:
- 7.28
- CEC:
- 28.87 other: cool/kg
- Matrix no.:
- #2
- Matrix type:
- silt loam
- % Org. carbon:
- 1.36
- pH:
- 4.6
- CEC:
- 11.53
- Matrix no.:
- #3
- Matrix type:
- silty clay loam
- % Org. carbon:
- 5.36
- pH:
- 6.81
- CEC:
- 22.9
- Matrix no.:
- #4
- Matrix type:
- silt loam
- % Org. carbon:
- 1.39
- pH:
- 7.84
- CEC:
- 7.08
- Matrix no.:
- #5
- Matrix type:
- silt loam
- % Org. carbon:
- 6.85
- pH:
- 7.96
- CEC:
- 22.13
- Details on matrix:
- COLLECTION AND STORAGE
- Geographic location: Jilin 125.73 degrees E 42.28 degrees North; Jiangxi 117.01 degrees E 28.23 degrees N; Jiangsu 120.30 degrees E 31.60 degrees N; Shandong 116.06 degrees E 34.81 degrees N; Gansu 100.40 degrees E 38.90 degrees N. (Soil information can be seen in table in the Any other information on materials and methods incl. tables section)
- Collection procedures: NS
- Sampling depth (cm): NS
- Storage conditions:
- Storage length:
- Soil preparation (e.g.: 2 mm sieved; air dried etc.): soils were air dried at 20-25 degrees Celsius and sieved to particle size 0.3 mm.
PROPERTIES
- % sand: NS
- % silt: NS
- % clay: NS
- pH: See above
- Organic carbon (%): See above
- CEC (meq/100 g): See above
- Carbonate as CaCO3:NS
- Insoluble carbonates (%):NS
- Extractable Cations (Ca, Mg, Na, K, H) (MEQ/100 g): NS
- Special chemical/mineralogical features:NS
- Clay fraction mineralogy: NS
- Moisture at 1/3 atm (%): NS
- Bulk density (g/cm3): NS
- Biomass (e.g. in mg microbial C/100 mg, CFU or other): NS - Details on test conditions:
TEST CONDITIONS
- Buffer: water
- pH: NS
- Suspended solids concentration: NS
TEST SYSTEM
- Type, size and further details on reaction vessel:NS
- Water filtered (i.e. yes/no; type of size of filter used, if any): deionised water
- Amount of soil/sediment/sludge and water per treatment (if simulation test): 100 ml aqueous phase, 1 g soil
- Soil/sediment/sludge-water ratio (if simulation test): 1:100 soil/solution
- Number of reaction vessels/concentration: NS
- Measuring equipment: HPLC-MS/MS
- Test performed in closed vessels due to significant volatility of test substance: No
- Method of preparation of test solution: test substance was dissolved in deionised water (1.0417 g test substance in 100 mL water)
- Are the residues from the adsorption phase used for desorption: no- Sample No.:
- #5
- Duration:
- 6 h
- Initial conc. measured:
- 100 other: mg/L
- Sample No.:
- #4
- Duration:
- 6 h
- Initial conc. measured:
- 100 other: mg/L
- Sample No.:
- #3
- Duration:
- 6 h
- Initial conc. measured:
- 100 other: mg/L
- Sample No.:
- #1
- Duration:
- 6 h
- Initial conc. measured:
- 100 other: mg/L
- Sample No.:
- #2
- Duration:
- 6 h
- Initial conc. measured:
- 100 other: mg/L
- Sample no.:
- #1
- Duration:
- 6 h
- Conc. of adsorbed test mat.:
- 100 other: mg/L
- Sample no.:
- #2
- Duration:
- 6 h
- Conc. of adsorbed test mat.:
- 100 other: mg/L
- Sample no.:
- #3
- Duration:
- 6 h
- Conc. of adsorbed test mat.:
- 100 other: mg/L
- Sample no.:
- #4
- Duration:
- 6 h
- Conc. of adsorbed test mat.:
- 100 other: mg/L
- Sample no.:
- #5
- Duration:
- 6 h
- Conc. of adsorbed test mat.:
- 100 other: mg/L
- Key result
- Sample No.:
- #5
- Type:
- Kd
- Value:
- 9 070 L/kg
- pH:
- 6.85
- % Org. carbon:
- 6.85
- Key result
- Sample No.:
- #4
- Type:
- Kd
- Value:
- 35 900 L/kg
- pH:
- 7.84
- % Org. carbon:
- 1.39
- Key result
- Sample No.:
- #3
- Type:
- Kd
- Value:
- 19 500 L/kg
- pH:
- 6.81
- % Org. carbon:
- 5.36
- Key result
- Sample No.:
- #2
- Type:
- Kd
- Value:
- 2 550 L/kg
- pH:
- 4.6
- % Org. carbon:
- 1.36
- Key result
- Sample No.:
- #1
- Type:
- Kd
- Value:
- 57 700 L/kg
- pH:
- 7.28
- % Org. carbon:
- 6.54
- Adsorption and desorption constants:
- Kd: 5.77x10^4, 2.55x10^3,1.95x10^4,3.59x10^4 and 9.07x10^3, soils A to E, respectively
- Concentration of test substance at end of desorption equilibration period:
- After 48 h (soil/solution ratio 1:100, conc. 100 mg/l) the test substance was not detected in the water phase in either soil test.
- Sample no.:
- #1
- Duration:
- 6 h
- % Adsorption:
- 73.5
- Remarks on result:
- other: Percent recovery of mass balance (percent adsorption not applicable here)
- Sample no.:
- #2
- Duration:
- 6 h
- % Adsorption:
- 76.5
- Remarks on result:
- other: Percent recovery of mass balance (percent adsorption not applicable here)
- Sample no.:
- #3
- Duration:
- 6 h
- % Adsorption:
- 74.5
- Remarks on result:
- other: Percent recovery of mass balance (percent adsorption not applicable here)
- Sample no.:
- #4
- Duration:
- 6 h
- % Adsorption:
- 81
- Remarks on result:
- other: Percent recovery of mass balance (percent adsorption not applicable here)
- Sample no.:
- #5
- Duration:
- 6 h
- % Adsorption:
- 84.5
- Remarks on result:
- other: Percent recovery of mass balance (percent adsorption not applicable here)
- Details on results (Batch equilibrium method):
- The results can be seen in Table 1. in the "Any other information on results incl. tables" section
- Validity criteria fulfilled:
- yes
- Conclusions:
- The adsorption coefficient (Kd) values of the test substance in five different soils were 5.77x10^4, 2.55x10^3,1.95x10^4,3.59x10^4 and 9.07x10^3, respectively. The corresponding Koc values were: 8.83x10^4, 1.88x10^6, 3.64x10^5,2.58x10^6 and 1.32x10^5 cm^3/g respectively.
The test substance was not detected in the water phase fo the five soils (<0.01 mg/L). - Executive summary:
This test was carried out according to "The guidelines for testing of chemicals" (HJ/T 153-2004) with reference to OECD guideline 106 "Adsorption - Desorption Using a Batch Equilibrium Method" (2000). Five soil types with different pH, texture and organic carbon content sampled from five provinces in China were selected. The batch equilibrium method was used and Tier 1 to 5 tests were performed to establish the adsorption characteristics of the test substance.
The results showed that the optimal soil/aqueous ratio for the five soils is 1:100 and the appropriate adsorption equilibrium time is 6 hours.
Anion and cation of the substance was produced in water and the cation form was measured by HPLC-MS/MS. It contains a long straight chain structure which is readily adsorbed by soil. The test substance was almost completely adsorbed on the soils.
The adsorption coefficient (Kd) values of the test substance in the five soils were 5.77x104, 2.55x103,1.95x104,3.59x104 and 9.07x103, respectively. The corresponding Koc values were: 8.83x104, 1.88x106, 3.64x105,2.58x106 and 1.32x105 cm3 g-1 respectively.
The test substance was not detected in the water phase of the five soils (<0.01 mg/L), there was no detectable desorption.
Reference
Table 1. Results of adsorbtion kinetics
Time (h) | Percentage of adsorption (%) in soil types | ||||
A | B | C | D | E | |
2 | 99.47 | 99.93 | 99.84 | 99.89 | 99.68 |
4 | 99.60 | 99.86 | 99.90 | 99.94 | 99.73 |
6 | 99.56 | 99.90 | 99.87 | 99.93 | 99.72 |
Kd (cm3/g) | 5.77 x 10^4 | 2.55x10^3 | 1.95x10^4 | 3.59x10^4 | 9.07x10^3 |
Koc (cm3/g | 8.83x10^4 | 1.88x10^6 | 3.64x10^5 | 2.58x10^6 | 1.32x10^5 |
Description of key information
Koc = 2,580,000 L/kg; OECD 106; Shenhu, S. (2015)
Key value for chemical safety assessment
- Koc at 20 °C:
- 2 580 000
Additional information
This key study was carried out according to "The guidelines for testing of chemicals" (HJ/T 153-2004) with reference to OECD guideline 106 "Adsorption - Desorption Using a Batch Equilibrium Method" (2000). Five soil types with different pH, texture and organic carbon content sampled from five provinces in China were selected. The batch equilibrium method was used and Tier 1 to 5 tests were performed to establish the adsorption characteristics of the test substance.
The results showed that the optimal soil/aqueous ratio for the five soils is 1:100 and the appropriate adsorption equilibrium time is 6 hours.
Anion and cation of the substance was produced in water and the cation form was measured by HPLC-MS/MS. It contains a long straight chain structure which is readily adsorbed by soil. The test substance was almost completely adsorbed on the soils.
The adsorption coefficient (Kd) values of the test substance in the five soils were 5.77x104, 2.55x103,1.95x104,3.59x104 and 9.07x103, respectively. The corresponding Koc values were: 8.83x104, 1.88x106, 3.64x105,2.58x106 and 1.32x105 cm3 g-1 respectively.
The test substance was not detected in the water phase of the five soils (<0.01 mg/L), there was no detectable desorption.
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