Registration Dossier
Registration Dossier
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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.
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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: -
Partition coefficient
Administrative data
- Endpoint:
- partition coefficient
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 007
- Report date:
- 2007
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 107 (Partition Coefficient (n-octanol / water), Shake Flask Method)
- Version / remarks:
- 1995
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 117 (Partition Coefficient (n-octanol / water), HPLC Method)
- Version / remarks:
- 2004
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- estimation method (solubility ratio)
- Partition coefficient type:
- octanol-water
Test material
- Reference substance name:
- Acid Navy RN-2682
- IUPAC Name:
- Acid Navy RN-2682
- Test material form:
- solid
Constituent 1
Study design
- Analytical method:
- high-performance liquid chromatography
Results and discussion
Partition coefficient
- Type:
- log Pow
- Partition coefficient:
- -2.19
- Temp.:
- 20 °C
- pH:
- 6.5 - 6.55
- Remarks on result:
- other: pH of water phase
- Details on results:
- Neither the HPLC-method nor the flask-shaking method were applicable for the determination of the partition coefficient of test item.
Thus, the log Pow-value for the test item was estimated from its solubility in n-octanol and in water, respectively.
water solubility 11402 μg/ml
n-octanol solubility 73.76 μg/ml
Applicant's summary and conclusion
- Conclusions:
- logPow = -2.19 at 20 °C
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