Registration Dossier
Registration Dossier
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EC number: 613-701-7 | CAS number: 6485-45-6
Adsorption / desorption
Administrative data
- Endpoint:
- adsorption / desorption: screening
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP guideline study according to OECD 106
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 988
- Report date:
- 1988
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:
- soil
Test material
- Reference substance name:
- 2,6-dimethylmorpholine
- EC Number:
- 205-509-3
- EC Name:
- 2,6-dimethylmorpholine
- Cas Number:
- 141-91-3
- IUPAC Name:
- 2,6-dimethylmorpholine
- Details on test material:
- - Name of test material (as cited in study report): 2,6-dimethylmorpholine
- Other: metabolite of tridemorph
Constituent 1
- Radiolabelling:
- yes
Study design
- Test temperature:
- 20-22 °C
Batch equilibrium or other method
- Analytical monitoring:
- yes
- Details on sampling:
- Recovery test in aqueous soil extracts:
- 20 g of soil were shaken with 100 m1 0.01 M aqueous calcium chloride solution on a mechanical shaker for 90 min
- the soil-water suspension was then centrifuged
- the water extract was decanted from the soil residue
- 10 m1 aliquot of the water extract (corresponding to 2 g soil) was fortified with 2.6-dimethylmorpholine in four different concentrations equal to approx. 0.05, 0.2., 1 and 5 mg/l
- 1 m1 aliquot of the fortified water extract was then radioassayed
Adsorption screening test:
- 2 g soil were shaken with 10 m 1 0.01 M aqueous calcium chloride solution containing approx. 5 mg/l Tridemorph on 8 mechanical shaker f o r 16 hours
- the soil/water suspension was then centrifuged
- the water extract was decanted from the soil residue and the water volume was measured
- 1 ml aliquot of the water extract was then radioassayed.
Results and discussion
Results: Batch equilibrium or other method
- Recovery of test material:
- On all four treated soils less than 25 % (0.9 - 16 %) of the 2,6-dimethylmorpholine are adsorbed. Therefore, according to OECD 106, no further investigations were carried out.
Applicant's summary and conclusion
- Conclusions:
- Leaching of 2,6-dimethylmorpholine into deeper soil layers cannot be excluded.
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