Registration Dossier
Registration Dossier
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EC number: - | CAS number: -
Adsorption / desorption
Administrative data
- Endpoint:
- adsorption / desorption
- Remarks:
- other: absorption coefficient
- Adequacy of study:
- other information
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Study conducted to GLP in compliance with agreed protocols with no deviations from standard test guidelines and/or minor methodological deficiences which do not affect the quality of the relevant results
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 009
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: Method C19 Adsorption Coefficient of Commission Regulation (EC) No 440/2008
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- other: HPLC screening method
Test material
- Details on test material:
- - Name of test material (as cited in study report): INK BH11 M
- Structural formula attached as image file (if other than submission substance): see Fig.
- Substance type: dark red powder
- Lot/batch No.: MB-1A
- Storage condition of test material: room temperature in the dark
Constituent 1
Study design
- Test temperature:
- 30 C
HPLC method
- Details on study design: HPLC method:
- EQUIPMENT
- Apparatus: HPLC System Agilent Technologies 1050, incorporating autosampler and work station
- Type: Column type Zorbax SB-CN 5u (250 x 4.6 mm id)
- Type, material and dimension of analytical (guard) column:
- Detection system:
MOBILE PHASES
- Type: Methanol:reverse osmosis water (55:45 v/v); adjusted to pH 7, with 0.1M sodium hydroxide
- Experiments with additives carried out on separate columns: yes / no
- pH: 7.0
- Solutes for dissolving test and reference substances:
DETERMINATION OF DEAD TIME
- Method: dead time determined by measuring the retention time of formamide (purity >/= 99.5%, 620 mg/L solution in mobile phase
REFERENCE SUBSTANCES
- Identity: acetanilide, phenol, atrazine, isoproturon, triadimenol, linuron, maphthalene, endosulfan-diol, fenthion, alpha-endosulfan, phenanthrene, diclofop-methyl, DDT
DETERMINATION OF RETENTION TIMES
- Quantity of test substance introduced in the column: injection volume 10 uL
- Quantity of reference substances: See Table 11.1
- Intervals of calibration:
REPETITIONS
- Number of determinations: 2
EVALUATION
- Calculation of capacity factors k': see tables 11.2 and 11.3
- Calculation of retention times: see tables 11.2 and 11.3
- Determination of the log Koc value:see tables 11.2 and 11.3
Results and discussion
Adsorption coefficientopen allclose all
- Type:
- Koc
- Value:
- < 17.8
- Type:
- log Koc
- Value:
- < 1.25
Results: HPLC method
- Details on results (HPLC method):
- Test material contained numerous salted sulphonic acid groups, teseting was carried out at pH 7, with test material in fully ionised state
Applicant's summary and conclusion
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