Registration Dossier
Registration Dossier
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EC number: 276-423-1 | CAS number: 72152-71-7
Partition coefficient
Administrative data
- Endpoint:
- partition coefficient
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Remarks:
- OECD 107
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 016
- Report date:
- 2016
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 107 (Partition Coefficient (n-octanol / water), Shake Flask Method)
- Type of method:
- shake-flask method to: flask method
- Partition coefficient type:
- octanol-water
Test material
- Reference substance name:
- Disodium [6-hydroxy-5-[(2-hydroxy-5-sulphophenyl)azo]naphthalene-2-sulphonato(4-)]cuprate(2-)
- EC Number:
- 276-423-1
- EC Name:
- Disodium [6-hydroxy-5-[(2-hydroxy-5-sulphophenyl)azo]naphthalene-2-sulphonato(4-)]cuprate(2-)
- Cas Number:
- 72152-71-7
- Molecular formula:
- C16H8CuN2O8S2.2Na
- IUPAC Name:
- Cuprate(2-), [6-(hydroxy-kO)-5-[2-[2-(hydroxy-kO)-5-sulfophenyl]diazenyl-kN1]-2-naphthalenesulfonato(4-)]-, sodium
Constituent 1
Study design
- Analytical method:
- high-performance liquid chromatography
Results and discussion
Partition coefficient
- Key result
- Type:
- log Pow
- Partition coefficient:
- < -3
- Temp.:
- 23 °C
- pH:
- 7.1
- Remarks on result:
- other: mean
Any other information on results incl. tables
Table 1: Results in detail
no. |
stock solution [mL] |
n-octanol [mL] |
conc. in n-octanol phase [mg/L] |
conc. in water phase [mg/L] |
log pow |
A1 (pH 7.1) |
5 |
10 |
< 0.5 |
657.6 |
< - 3 |
A2 (pH 7.0) |
5 |
10 |
< 0.5 |
659.5 |
< - 3 |
A2 (pH 7.3) |
10 |
10 |
< 0.5 |
649.2 |
< - 3 |
B2 (pH 7.0) |
10 |
10 |
< 0.5 |
650.3 |
< - 3 |
C1 (pH 6.8) |
20 |
10 |
< 0.5 |
627.7 |
< - 3 |
C2 (pH 7.1) |
20 |
10 |
< 0.5 |
653.7 |
< - 3 |
mean |
- |
- |
- |
|
< - 3 |
Table 2: Recovery rate of test substance
no. |
test substance in stock solution [mg] |
test substance in n-octanol phase [mg] |
test substance in water phase [mg] |
sum [mg] |
recovery rate [%] |
A1 |
3.15 |
< 0.005 |
3.29 |
3.29 |
105 |
A2 |
3.15 |
< 0.005 |
3.30 |
3.30 |
105 |
B1 |
6.29 |
< 0.005 |
6.49 |
6.49 |
103 |
B2 |
6.29 |
< 0.005 |
6.50 |
6.50 |
103 |
C1 |
12.58 |
< 0.005 |
12.55 |
12.55 |
100 |
C2 |
12.58 |
< 0.005 |
13.07 |
13.07 |
104 |
Applicant's summary and conclusion
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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