Registration Dossier
Registration Dossier
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Reaction mass of 6-(2-ethyl-6-methylanilino)-5-(4-{4-[ethyl(3-sulfobenzyl) amino] phenylazo} phenylazo)-4-hydroxynaphthalene-2-sulfonic acid, sodium and/or disodium salt(s) and 6-(2-ethyl-6-methylanilino)-5-(4-{4-[ethyl(4-sulfobenzyl) amino] phenylazo} phenylazo)-4-hydroxynaphthalene-2-sulfonic acid, sodium and/or disodium salt(s)
EC number: 475-080-7 | CAS number: -
Hydrolysis
Administrative data
- Endpoint:
- hydrolysis
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 007
- Report date:
- 2007
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 111 (Hydrolysis as a Function of pH)
- Version / remarks:
- 2004
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- Acid Navy RN-2682
- IUPAC Name:
- Acid Navy RN-2682
- Test material form:
- solid
Constituent 1
Study design
- Analytical monitoring:
- yes
- Buffers:
- pH 4, 7, 9
- Details on test conditions:
- According to the guideline, a preliminary test was performed at 50 °C ± 0.5 °C at each of pH 4.0, pH 7.0 and pH 9.0. Aliquots of each test solution were analyzed in time intervals using the analytical method as described later in this report. Analysis was performed before incubation, after 2.4 hours and after 120 hours.
A main study was not required, as the test item was found to be stable according to the criteria given in the guideline.
Duration of testopen allclose all
- Duration:
- 5 d
- pH:
- 4
- Temp.:
- 50 °C
- Initial conc. measured:
- ca. 121 - 122 mg/L
- Duration:
- 5 d
- pH:
- 7
- Temp.:
- 50 °C
- Initial conc. measured:
- ca. 105 - 108 mg/L
- Duration:
- 5 d
- pH:
- 9
- Temp.:
- 50 °C
- Initial conc. measured:
- ca. 92 mg/L
Results and discussion
- Preliminary study:
- The results of pH 4.0, pH 7.0 and pH 9.0 showed no significant degradation of test item at 50 °C. The degradation of test item was less than 10% after 5 days.
It can be concluded, that the estimated halfl-ife time is higher than one year under representative environmental conditions (25 °C).
Hydrolytically stable, and no further testing was necessary. - Transformation products:
- no
Dissipation DT50 of parent compoundopen allclose all
- pH:
- 4
- Temp.:
- 25 °C
- DT50:
- > 1 yr
- Remarks on result:
- hydrolytically stable based on preliminary test
- pH:
- 7
- Temp.:
- 25 °C
- DT50:
- > 1 yr
- Remarks on result:
- hydrolytically stable based on preliminary test
- pH:
- 9
- Temp.:
- 25 °C
- DT50:
- > 1 yr
- Remarks on result:
- hydrolytically stable based on preliminary test
Applicant's summary and conclusion
- Conclusions:
- Hydrolytically stable; no further testing was necessary.
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